Fish anatomy10 min
Fish body regions and directional terms
Learn the head, trunk, tail, dorsal, ventral, cranial, caudal, medial and lateral landmarks used to describe where a lesion or organ sits.
fish healthfish anatomyevidence first
Fish health · disease · symptoms
Fish Health & Disease Guide
Decision-first fish health guidance with 810 disease and condition profiles, 790 detailed symptom differentials, 124 practical emergency, diagnostic, quarantine, treatment and outbreak guides, and 100 anatomy and diagnostic-sign interpretation guides.
1824 complete guidesOriginal AquaNexus writingReviewed 2026-08-14
Browse the section
Choose a practical starting point.
Use the search to find a species, task or problem. Related guides connect the wider system.
Fish Health Diagnostic & Emergency Framework
Start with the decision you need to make.
Use emergency triage, diagnostics, biosecurity, treatment-principle and outbreak workflows before narrowing into a disease or symptom profile.
Anatomy & Diagnostic Signs
Know what structure you are looking at before naming the disease.
Use anatomy to localise the finding, then interpret its pattern and choose the test that can separate look-alikes.
Fish anatomy10 min
Fish skin: epidermis, dermis and the water interface
Explains the layered skin barrier and why fish skin is a living interface with the surrounding water rather than a dry protective covering.
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Fish anatomy10 min
The fish mucus coat and mucous cells
Explains where surface mucus comes from, how it supports the skin and gills, and why both excess and loss of mucus can matter during examination.
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Fish anatomy10 min
Fish scales and scale pockets
Explains how scales sit within the skin, how scale pockets relate to surrounding tissue, and why missing scales and lifted scales are different findings.
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Fish anatomy10 min
Pigment cells and normal colour in fish
Introduces chromatophores and the biological reasons normal colour can change with light, stress, background, age, social state and disease.
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Fish anatomy10 min
Fish fins: paired and unpaired structures
Maps pectoral, pelvic, dorsal, anal and caudal fins and explains how their positions help localise injury, deformity and swimming problems.
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Fish anatomy10 min
Fin rays, spines and soft fin tissue
Separates supporting rays or spines from the soft tissue between them so fin damage can be described anatomically rather than as one vague lesion.
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Fish anatomy10 min
Body-wall muscle and fish myomeres
Explains the segmented muscle blocks that power swimming and why focal muscle damage may produce very different signs from whole-body weakness.
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Fish anatomy10 min
The vertebral column, ribs and body support
Introduces vertebrae and associated skeletal structures used when describing spinal curvature, compression, fracture or developmental deformity.
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Fish anatomy10 min
The operculum and branchial chamber
Explains the gill cover and the protected chamber beneath it, including how opercular movement can be useful during respiratory assessment.
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Fish anatomy10 min
Gill arches and gill rakers
Explains the supportive gill arches and rakers and distinguishes them from the respiratory filaments that project from the arches.
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Fish anatomy10 min
Gill filaments and secondary lamellae
Explains the thin respiratory structures that create the large exchange surface and why small architectural changes can have large effects on breathing.
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Fish anatomy10 min
Blood flow through the fish gill
Follows blood through afferent vessels, lamellae and efferent vessels to show why circulation and gill structure must both work for efficient gas exchange.
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Fish anatomy10 min
Ion-transport cells and gill osmoregulation
Explains how specialised gill epithelial cells contribute to salt, ion and acid-base regulation in addition to the gill role in respiration.
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Fish anatomy10 min
The fish mouth, jaws and oral cavity
Maps lips, jaw tissues, teeth where present and the oral cavity so swelling, erosion, masses and feeding problems can be described by location.
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Fish anatomy10 min
The pharynx and feeding structures behind the mouth
Explains the throat region, pharyngeal structures and species variation that can make the rear of the mouth look very different between fish.
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Fish anatomy10 min
The fish oesophagus
Explains the short passage between pharynx and digestive tract and why its anatomy is easy to overlook during gross examination.
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Fish anatomy10 min
The fish stomach and stomachless species
Explains stomach anatomy while emphasising that some teleost groups lack a true stomach, making species knowledge essential before calling an organ abnormal.
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Fish anatomy10 min
The fish intestine and regional specialisation
Explains intestinal loops, mucosal folds and regional variation and why gut length and shape can differ greatly with species and feeding ecology.
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Fish anatomy10 min
Pyloric caeca and digestive anatomy variation
Explains finger-like pyloric caeca where present and why their number and prominence vary among fish rather than representing a universal organ pattern.
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Fish anatomy10 min
The fish liver
Explains liver location, gross appearance and its roles in metabolism, storage and detoxification without treating colour or size alone as a diagnosis.
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Fish anatomy10 min
The gallbladder and bile ducts
Explains the bile-storage and drainage system and why gallbladder fullness can vary with feeding state and post-mortem interval.
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Fish anatomy10 min
Pancreatic tissue in fish
Explains why pancreatic tissue can be compact in some species and diffuse through surrounding tissues in others, complicating gross identification.
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Fish anatomy10 min
The fish spleen
Explains spleen location and its blood and immune functions, providing a baseline for interpreting splenic enlargement, pallor or darkening.
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Fish anatomy10 min
The head kidney as an immune and blood-forming organ
Explains the anterior kidney region and its important haematopoietic and immune roles in teleost fish.
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Fish anatomy10 min
The trunk kidney and renal tissue
Explains the elongated kidney along the dorsal body wall and how renal tissue combines excretory, osmoregulatory and blood-forming functions.
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Fish anatomy10 min
Fish glomeruli and renal tubules
Introduces the microscopic filtering and tubular structures of the nephron that are relevant when interpreting renal histology.
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Fish anatomy10 min
The fish heart: atrium and ventricle
Explains the main pumping chambers of the teleost heart and their position just behind and below the gills.
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Fish anatomy10 min
Sinus venosus and bulbus arteriosus
Explains the inflow and outflow structures associated with the teleost heart and why the fish heart should not be mapped directly onto mammalian anatomy.
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Fish anatomy10 min
Major blood vessels and single-circuit circulation
Explains the basic route from heart to gills to body and back to the heart, giving context for gill and systemic lesions.
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Fish anatomy10 min
Fish blood and haematopoietic tissues
Explains red cells, white-cell populations and the major tissues involved in fish blood-cell production, especially kidney and spleen.
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Fish anatomy10 min
The fish swim bladder
Explains the gas-filled organ used for buoyancy in many teleosts and why shape, number of chambers and connections vary between groups.
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Fish anatomy10 min
Physostomous and physoclistous swim bladders
Explains the major difference between swim bladders connected to the gut by a pneumatic duct and those regulated primarily through specialised gas exchange.
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Fish anatomy10 min
The swim-bladder gas gland and rete mirabile
Explains specialised structures used by many physoclistous fish to move gas into the swim bladder and why this is not the same as swallowing air.
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Fish anatomy10 min
Major regions of the fish brain
Introduces olfactory bulbs, forebrain, optic tectum, cerebellum and medulla so neurological signs can be related to broad anatomical regions.
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Fish anatomy10 min
The spinal cord and peripheral nerves
Explains the central pathway within the vertebral column and peripheral nerves supplying muscles and sensory structures.
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Fish anatomy10 min
The fish eye: cornea, lens and globe
Explains the main visible eye structures so corneal clouding, lens opacity and deeper eye changes are not treated as the same finding.
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Fish anatomy10 min
The fish retina and photoreceptors
Explains the layered light-sensing tissue at the back of the eye and why retinal disease is different from a surface-eye lesion.
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Fish anatomy10 min
The inner ear and otolith organs
Explains the internal sensory structures involved in balance and hearing and why equilibrium problems do not automatically prove swim-bladder disease.
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Fish anatomy10 min
The fish lateral line and neuromasts
Explains the mechanosensory organs distributed over the head and body that detect water movement and contribute to orientation and schooling.
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Fish anatomy10 min
Olfactory organs and fish nares
Explains that the paired nostril openings lead to sensory tissue for smell and are not breathing passages like mammalian nostrils.
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Fish anatomy10 min
Taste buds and chemosensation in fish
Explains taste receptors in the mouth and, in some species, on external structures such as lips or barbels, linking anatomy to feeding behaviour.
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Fish anatomy10 min
The pituitary and endocrine control in fish
Explains the small endocrine organ associated with the brain and its broad role in growth, reproduction, stress and osmoregulatory control.
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Fish anatomy10 min
Thyroid follicles and calcium-regulating endocrine tissues
Explains that fish endocrine anatomy differs from mammals, including dispersed thyroid follicles and specialised calcium-regulating tissues.
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Fish anatomy10 min
The fish ovary and developing oocytes
Explains ovarian position, paired or fused anatomy depending on species, and the mixture of oocyte stages that can be normal in a mature female.
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Fish anatomy10 min
The fish testis and sperm-producing tissue
Explains testicular position and tissue organisation and why normal size, shape and colour vary with species, season and reproductive state.
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Fish anatomy10 min
The vent, anus and urogenital openings
Explains the external openings at the rear of the abdomen and why their number and arrangement differ among fish groups.
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Fish anatomy10 min
The thymus and major fish immune tissues
Explains the thymus, head kidney and spleen as linked components of the teleost immune system rather than a single isolated organ.
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Fish anatomy10 min
How fish anatomy changes with age, sex and body size
Explains why organ proportions, gonads, body shape and some sensory or skeletal features change naturally as fish grow and mature.
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Fish anatomy10 min
Why normal anatomy differs between fish species
Explains major species differences in scales, stomachs, swim bladders, teeth, gut shape and other structures so one species is not used as the universal normal.
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Diagnostic signs10 min
Reading gill colour during a fish-health examination
Shows how pale, bright, dark, brownish or uneven gill colour can be recorded as evidence while avoiding a disease label from colour alone.
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Diagnostic signs10 min
Reading gill mucus and surface texture
Explains how mucus, roughness, debris and surface irregularity can be described before microscopy or other tests narrow the cause.
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Diagnostic signs10 min
Reading gill-filament shape and spacing
Explains what shortening, clumping, fraying or uneven filament appearance can mean as an anatomical observation rather than a diagnosis.
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Diagnostic signs10 min
Interpreting lamellar hyperplasia on fish gill microscopy
Explains epithelial thickening on gill microscopy and why hyperplasia is a common response pattern shared by many environmental and infectious insults.
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Diagnostic signs10 min
Interpreting lamellar fusion on fish gill microscopy
Explains how neighbouring lamellae can become bridged or fused and why the finding indicates altered architecture without identifying one unique cause.
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Diagnostic signs10 min
Interpreting epithelial lifting in fish gills
Explains separation of gill epithelium from supporting structures and the need to distinguish true injury from handling or fixation artefact.
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Diagnostic signs10 min
Interpreting gill erosion and necrosis
Explains tissue loss and cell death as serious but non-specific lesions requiring context from water quality, distribution and laboratory evidence.
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Diagnostic signs10 min
Interpreting ionocyte or chloride-cell hyperplasia
Explains an increase in specialised ion-transport cells and why salinity, acid-base stress and other gill insults may contribute.
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Diagnostic signs10 min
When one gill looks different from the other
Uses left-right asymmetry to separate focal obstruction, trauma or local lesions from processes more likely to affect both sides.
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Diagnostic signs10 min
Separating true gill lesions from post-mortem change
Explains how rapid tissue deterioration after death can alter colour and microscopic appearance and why fresh sampling matters.
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Diagnostic signs10 min
Reading skin mucus during examination
Explains how excess, patchy or reduced mucus is documented and how skin scrapes and the wider clinical picture help interpret it.
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Diagnostic signs10 min
Distinguishing scale loss from scale lifting
Explains the anatomical difference between a scale being absent and a scale being pushed outward by changes in the tissues beneath it.
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Diagnostic signs10 min
Reading redness around scale pockets
Explains how focal or diffuse erythema around scale bases can be mapped and why trauma, inflammation and systemic processes can look similar.
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Diagnostic signs10 min
Distinguishing superficial erosion from a deeper skin ulcer
Explains how lesion depth, margins and exposed tissue help describe skin loss before a cause is assigned.
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Diagnostic signs10 min
Distinguishing fin-ray damage from fin-margin erosion
Explains how a broken supporting ray differs from progressive soft-tissue loss between rays, improving injury and disease descriptions.
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Diagnostic signs10 min
Reading redness at the base of a fin
Explains how focal fin-base redness is localised and compared with whole-body vascular changes, trauma and nearby skin lesions.
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Diagnostic signs10 min
Interpreting darkening and pigment loss
Explains why stress, background response, nerve injury, inflammation and systemic illness can alter pigmentation without one colour change being diagnostic.
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Diagnostic signs10 min
Interpreting white material on the fish surface
Separates mucus, sloughed tissue, attached debris and true growths by location, texture and microscopy rather than assuming every white patch is fungus.
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Diagnostic signs10 min
Interpreting skin nodules by depth and tissue layer
Explains how surface, intradermal and deeper masses are described differently and why depth can reshape the differential list.
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Diagnostic signs10 min
Interpreting pits and erosions along the lateral-line region
Explains how to map lesions around sensory canals and pores while considering nutrition, water, trauma and infectious differentials.
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Diagnostic signs10 min
Distinguishing corneal clouding from lens opacity
Explains how to decide whether cloudiness lies on the eye surface or deeper within the lens, which leads to very different differential pathways.
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Diagnostic signs10 min
Interpreting one swollen eye versus both eyes
Uses unilateral versus bilateral distribution to separate local orbital injury or disease from broader systemic and environmental possibilities.
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Diagnostic signs10 min
Reading eye redness by anatomical layer
Explains how surface vessels, the anterior chamber and deeper ocular tissues can produce different red appearances that should not be merged into one sign.
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Diagnostic signs10 min
Interpreting mouth plaques, erosions and surface lesions
Explains how oral lesions are mapped to lips, jaw margins, oral mucosa or deeper tissues before infection, trauma or neoplasia are considered.
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Diagnostic signs10 min
Interpreting jaw swelling and asymmetry
Uses location, firmness, feeding ability and left-right comparison to organise traumatic, inflammatory, skeletal and mass-like differentials.
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Diagnostic signs10 min
Reading abdominal contour and symmetry
Explains how dorsal and side views help separate general body condition, symmetrical distension and one-sided enlargement.
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Diagnostic signs10 min
Distinguishing free abdominal fluid from organ enlargement
Explains why a rounded abdomen can reflect fluid, gonad, intestine, liver or another mass and what imaging or veterinary examination can add.
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Diagnostic signs10 min
Interpreting liver size, edge and surface at necropsy
Explains how enlargement, rounded edges, surface irregularity and colour are recorded together instead of using one gross feature as a diagnosis.
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Diagnostic signs10 min
Interpreting mottling and focal changes in the fish liver
Explains how focal versus diffuse patterns and lesion distribution help separate local masses, vascular change, inflammation and artefact.
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Diagnostic signs10 min
Interpreting spleen size and colour at necropsy
Explains why splenic enlargement, pallor or darkening must be interpreted with blood status, infection, congestion and species variation.
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Diagnostic signs10 min
Interpreting kidney enlargement along the dorsal body wall
Explains how the kidney is located and assessed so renal tissue is not confused with adjacent gonad, fat, pigment or other structures.
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Diagnostic signs10 min
Interpreting thickened intestinal walls at necropsy
Explains how focal versus diffuse wall thickening and associated contents or fluid guide inflammatory, parasitic, neoplastic and obstructive differentials.
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Diagnostic signs10 min
Interpreting an unexpectedly empty intestine
Explains why fasting, anorexia, obstruction, recent feeding and post-mortem interval all matter before an empty gut is treated as a disease sign.
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Diagnostic signs10 min
Interpreting intestinal gas and distension
Explains how gas, fluid and digesta can enlarge bowel loops and why gross distension alone does not prove a swim-bladder or infectious problem.
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Diagnostic signs10 min
Interpreting gallbladder distension and bile appearance
Explains how feeding state and post-mortem timing can influence gallbladder fullness and why bile colour by itself is weak diagnostic evidence.
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Diagnostic signs10 min
Interpreting swim-bladder collapse, overexpansion and asymmetry
Explains how gross shape is described and why buoyancy signs can arise from anatomy outside the swim bladder as well as from the organ itself.
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Diagnostic signs10 min
Interpreting fluid around the fish heart
Explains how pericardial fluid is recorded and why inflammation, circulatory failure, trauma and post-mortem change require different supporting evidence.
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Diagnostic signs10 min
Interpreting heart size and shape at necropsy
Explains why chamber proportions, species, body size and post-mortem handling matter before apparent enlargement is considered abnormal.
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Diagnostic signs10 min
Interpreting muscle pallor, bruising and haemorrhage
Explains how focal trauma, systemic bleeding, degeneration and post-mortem change can alter body-wall muscle appearance.
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Diagnostic signs10 min
Interpreting spinal curvature by pattern and location
Explains how smooth lifelong curvature differs from abrupt angulation or progressive deformity and how pattern helps organise developmental, nutritional, traumatic and infectious possibilities.
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Diagnostic signs10 min
Separating post-mortem stiffness from abnormal rigidity
Explains how rigor and cooling after death can create stiffness that must not be confused with the posture or muscle tone observed while a fish was alive.
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Diagnostic signs10 min
Interpreting gross changes around the brain and meninges
Explains the limits of gross brain examination and why swelling, fluid, haemorrhage or discoloration generally require histology or laboratory work to interpret.
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Diagnostic signs10 min
Interpreting melanomacrophage pigment in kidney and spleen
Explains dark pigment aggregates in haematopoietic tissues and why age, species, prior inflammation and tissue turnover influence their prominence.
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Diagnostic signs10 min
Interpreting gonad size and left-right asymmetry
Explains how reproductive stage, sex and species affect gonad size and why marked asymmetry should be recorded before tumour or retention is assumed.
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Diagnostic signs10 min
Reading ovary colour and texture at necropsy
Explains how oocyte stages, atresia, inflammation and post-mortem change can alter ovarian appearance and why histology is often needed.
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Diagnostic signs10 min
Reading testis size, colour and texture at necropsy
Explains how season, maturity and tissue change affect testes and why gross appearance alone cannot distinguish inflammation, degeneration and neoplasia.
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Diagnostic signs10 min
Recognising autolysis in fish tissues
Explains rapid self-digestion after death and the common ways autolysis can mimic epithelial sloughing, softening, colour change and loss of cellular detail.
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Diagnostic signs10 min
Recognising sampling and handling artefacts in fish tissues
Explains how crushing, scraping, delayed fixation, freezing and poor section orientation can create lesions that were not present in the living fish.
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Diagnostic signs10 min
Using symmetry as a diagnostic clue in fish
Explains why paired eyes, gills, fins and body sides provide an internal control: unilateral findings often point toward a different process than bilateral change.
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Diagnostic signs10 min
Building an anatomical lesion map before naming a disease
Shows how to record every affected organ, tissue, side and body region first, then use that distribution to choose tests and disease differentials.
fish healthdiagnostic signsevidence first
Emergency triage10 min
First five minutes of a fish-health emergency
Use this when you know fish are in trouble but the cause is not yet clear. The priority is to separate immediate environmental danger from a problem that can tolerate slower diagnostic work.
fish healthemergency triagedecision workflow
Emergency triage10 min
Triage when several fish deteriorate at once
Several fish worsening together changes the odds. Shared water, oxygen, temperature, toxic exposure and a common infectious source move higher on the list than an isolated individual problem.
fish healthemergency triagedecision workflow
Emergency triage10 min
Restoring aeration after oxygen-supply failure
Loss of air, circulation or surface movement can become urgent quickly in warm, heavily stocked or medicated systems. The guide focuses on restoring gas exchange while avoiding unnecessary chemical additions.
fish healthemergency triagedecision workflow
Emergency triage10 min
Recovering a tank after biological filtration stops
A stopped or severely damaged biofilter can turn a health problem into an ammonia or nitrite emergency. The workflow separates restoring safe water from investigating why filtration failed.
fish healthemergency triagedecision workflow
Emergency triage10 min
Triage after prolonged cold exposure from heater failure
Cold exposure may slow fish, suppress feeding and alter oxygen demand, but rapid reheating can add another stressor. The decision is how to restore a stable species-appropriate range without overshooting.
fish healthemergency triagedecision workflow
Emergency triage10 min
Triage after heat stress and high aquarium temperature
High temperature can reduce dissolved oxygen while increasing metabolic demand. The first job is controlled cooling, stronger gas exchange and checking whether the heat source is still active.
fish healthemergency triagedecision workflow
Emergency triage10 min
Responding to suspected disinfectant exposure in aquarium water
This pathway is for a suspected chlorine, chloramine or similar disinfectant exposure. It prioritises stopping the source, restoring safe water and documenting the exposure rather than guessing from gill signs alone.
fish healthemergency triagedecision workflow
Emergency triage10 min
Responding to a suspected household contaminant in aquarium water
Paint, cleaners, solvents, soaps, fragrances and other household chemicals can create non-specific distress. The workflow focuses on source control, clean replacement water and preserving evidence of what entered the system.
fish healthemergency triagedecision workflow
Emergency triage10 min
Responding when airborne chemicals may have entered an aquarium
Airborne sprays can reach open tanks or be drawn into air pumps. The guide separates ventilation and source removal from the fish-health work-up and highlights why a sudden whole-tank pattern matters.
fish healthemergency triagedecision workflow
Emergency triage10 min
Emergency response to excessive injected carbon dioxide
In planted systems, excessive CO2 or poor gas exchange can cause rapid respiratory distress. This guide focuses on stopping injection, restoring aeration and checking the equipment and timing that produced the event.
fish healthemergency triagedecision workflow
Emergency triage10 min
Triage after a rapid pH change
A sudden pH movement can injure fish directly and can change the toxicity or behaviour of other water constituents. The safe approach is controlled stabilisation and investigation of the cause, not chasing a perfect number quickly.
fish healthemergency triagedecision workflow
Emergency triage10 min
Triage after an accidental salinity change
Incorrect salt mixing, top-off errors or sudden transfer between salinities can create osmotic stress. The workflow emphasises confirming actual salinity and correcting it gradually enough to avoid a second shock.
fish healthemergency triagedecision workflow
Emergency triage10 min
First response to a sudden toxic nitrogen spike
This guide covers a sudden ammonia or nitrite rise as an emergency pattern. The priority is exposure reduction, oxygenation, feeding restraint and finding the filtration or stocking event behind the spike.
fish healthemergency triagedecision workflow
Emergency triage10 min
Morning mass distress: checking overnight oxygen and equipment
Fish that look far worse at dawn may point to overnight oxygen demand, plant respiration, equipment stoppage or temperature change. The guide shows what evidence to collect before the pattern disappears later in the day.
fish healthemergency triagedecision workflow
Emergency triage10 min
Recovering a fish found outside the aquarium
A fish found on the floor needs gentle assessment for gill movement, skin damage and the length of exposure. The guide focuses on minimising handling and avoiding aggressive treatment before the fish has stabilised.
fish healthemergency triagedecision workflow
Emergency triage10 min
Triage after entrapment, crushing or suction injury
Filter intakes, pumps, décor and tank hardware can cause compression, scale loss and local tissue injury. The key is to remove the mechanical cause and determine whether the fish can maintain normal breathing and orientation.
fish healthemergency triagedecision workflow
Emergency triage10 min
Controlling risk after major physical trauma or bleeding
Severe trauma can look dramatic, but the immediate priorities are clean stable water, low stress and assessment of ongoing bleeding or deep tissue damage. The guide avoids turning every wound into an automatic antibiotic decision.
fish healthemergency triagedecision workflow
Emergency triage10 min
Emergency relocation when an aquarium becomes unsafe
A cracked tank, structural failure, contamination event or major equipment fault may make staying put more dangerous than moving fish. This guide helps choose temporary housing without creating temperature, oxygen or ammonia problems during the move.
fish healthemergency triagedecision workflow
Emergency triage10 min
Post-transport collapse: separating shock from disease
Transport can combine temperature change, low oxygen, altered pH, handling and pre-existing infection. The guide focuses on stabilisation and on preserving the timeline so transport stress is not mistaken for a specific pathogen.
fish healthemergency triagedecision workflow
Emergency triage10 min
Deciding when a fish-health emergency needs immediate veterinary help
This triage guide brings together red flags such as severe respiratory distress, loss of equilibrium, uncontrolled bleeding, major trauma and unusual multi-fish mortality so keepers can recognise when home observation is no longer enough.
fish healthemergency triagedecision workflow
Diagnostics & testing10 min
Preparing for an aquatic-veterinary appointment
A useful appointment starts before the fish leaves home. Bring a concise timeline, current water results, treatments already used, clear media and details of every fish affected so the veterinarian can spend time on diagnosis rather than reconstruction.
fish healthdiagnostics & testingdecision workflow
Diagnostics & testing10 min
Building a useful fish-health case history
A case history turns scattered observations into diagnostic evidence. This guide shows how to record onset, progression, stocking, water, feeding, maintenance, new arrivals and prior treatments in a form that reveals patterns.
fish healthdiagnostics & testingdecision workflow
Diagnostics & testing10 min
Taking diagnostic photos and video of sick fish
Photos and video are best for documenting change, breathing, swimming and lesion progression rather than naming a disease. The guide covers consistent lighting, scale reference, both sides of the fish and short behavioural clips.
fish healthdiagnostics & testingdecision workflow
Diagnostics & testing10 min
Collecting an aquarium water sample for diagnostic work
Water sampled after a large correction may no longer represent the conditions that harmed the fish. This guide explains why timing, clean containers, tank identification and recording temperature and treatment history matter.
fish healthdiagnostics & testingdecision workflow
Diagnostics & testing10 min
Why diagnostic sampling should happen before medication
Medication can suppress organisms, alter lesions, change water chemistry or make culture and microscopy harder to interpret. When the fish is stable enough, collecting appropriate samples first can preserve diagnostic value.
fish healthdiagnostics & testingdecision workflow
Diagnostics & testing10 min
Choosing a live, moribund or freshly dead fish for diagnostic testing
Sample quality changes quickly after death. This guide explains why a veterinarian or laboratory may prefer a live affected fish, a moribund specimen or a very fresh carcass depending on the tests planned.
fish healthdiagnostics & testingdecision workflow
Diagnostics & testing10 min
Skin scrape and mucus wet mount: what the test can show
A skin or mucus wet mount can reveal some external parasites and changes in surface material, but a negative slide does not exclude every cause. Collection technique and prompt examination are critical.
fish healthdiagnostics & testingdecision workflow
Diagnostics & testing10 min
Gill biopsy and gill wet mount: what the test can show
Gill tissue can reveal parasites and gross cellular or structural clues, but the procedure can stress a compromised fish. This guide explains why it is usually a veterinary or trained diagnostic procedure rather than a casual home test.
fish healthdiagnostics & testingdecision workflow
Diagnostics & testing10 min
Fin and lesion wet mounts: what they can and cannot identify
Fresh material from a fin margin or lesion surface can sometimes show motile organisms or fungal-like elements. It cannot by itself prove that every organism present is the primary cause of disease.
fish healthdiagnostics & testingdecision workflow
Diagnostics & testing10 min
Faecal examination in fish: what it can and cannot show
Faecal examination may reveal parasite stages, unusual material or digestive clues, but intermittent shedding and contamination can make interpretation difficult. Results must be tied back to appetite, body condition and species.
fish healthdiagnostics & testingdecision workflow
Diagnostics & testing10 min
Cytology and impression smears from fish lesions
Cytology examines cells and surface material from lesions. It can support a differential by showing inflammation, cell populations or abundant organisms, but definitive identification may still require culture, histology or molecular testing.
fish healthdiagnostics & testingdecision workflow
Diagnostics & testing10 min
Bacterial culture and antimicrobial susceptibility testing in fish
Culture aims to recover a clinically meaningful bacterium, while susceptibility testing helps determine which antimicrobials may inhibit it. Sampling after indiscriminate antibiotic exposure can reduce the usefulness of both.
fish healthdiagnostics & testingdecision workflow
Diagnostics & testing10 min
PCR testing for fish pathogens: how to interpret the result
PCR detects target genetic material, not necessarily active disease by itself. A positive or negative result has to be interpreted with sample type, timing, test validation, clinical signs and the disease being investigated.
fish healthdiagnostics & testingdecision workflow
Diagnostics & testing10 min
Histopathology in fish: what tissue microscopy can answer
Histopathology evaluates fixed tissues and can reveal patterns of inflammation, degeneration, parasites, neoplasia and organ injury. It is especially useful when gross appearance alone cannot separate competing diagnoses.
fish healthdiagnostics & testingdecision workflow
Diagnostics & testing10 min
Fish necropsy: what a post-mortem examination can reveal
Necropsy provides a systematic look at external and internal organs and guides what should be sampled next. It is most informative when done promptly and combined with history, water data and laboratory testing.
fish healthdiagnostics & testingdecision workflow
Diagnostics & testing10 min
Radiography and ultrasound in fish diagnosis
Imaging can help investigate skeletal change, masses, buoyancy problems, organ enlargement or retained material without relying only on surface appearance. What can be seen depends strongly on species, size and equipment.
fish healthdiagnostics & testingdecision workflow
Diagnostics & testing10 min
Blood tests in fish: when they are useful
Blood sampling can provide haematology or chemistry information in suitable fish, but reference intervals and sample volume can be limiting. It is generally a veterinarian-led tool rather than a universal aquarium test.
fish healthdiagnostics & testingdecision workflow
Diagnostics & testing10 min
Recognising microscope artefacts and false positives
Bubbles, debris, detached cells, food particles and environmental organisms can be mistaken for pathogens. This guide stresses movement, morphology, tissue location and repeat sampling rather than identifying a disease from a single unusual shape.
fish healthdiagnostics & testingdecision workflow
Diagnostics & testing10 min
What a negative fish-health test result really means
A negative result may mean the target was absent, below detection, missed by sampling, altered by treatment or tested at the wrong stage. Diagnostic confidence comes from combining tests and evidence, not treating one negative result as proof of health.
fish healthdiagnostics & testingdecision workflow
Diagnostics & testing10 min
Preserving, labelling and transporting fish diagnostic samples
Different tests need different sample handling. This guide focuses on contacting the receiving laboratory first, clear labels, chain-of-custody style records and avoiding improvised preservatives that can make a sample unusable.
fish healthdiagnostics & testingdecision workflow
Quarantine & biosecurity10 min
Quarantine versus isolation: which tank does a fish need?
Quarantine manages risk from apparently healthy new arrivals; isolation separates fish that are already sick or exposed. Treating the words as interchangeable can lead to poor traffic flow and accidental cross-contamination.
fish healthquarantine & biosecuritydecision workflow
Quarantine & biosecurity10 min
Building a quarantine tank that stays biologically stable
A quarantine tank is only useful if it can maintain safe ammonia, nitrite, temperature and oxygen. This guide focuses on simple equipment, observable surfaces and a plan for biological filtration before fish arrive.
fish healthquarantine & biosecuritydecision workflow
Quarantine & biosecurity10 min
Cycling and seeding a quarantine tank without cross-contamination
Borrowing wet media from an unknown or sick system can defeat quarantine. The guide compares safer ways to establish filtration while keeping the quarantine pathway epidemiologically separate from display tanks.
fish healthquarantine & biosecuritydecision workflow
Quarantine & biosecurity10 min
Daily quarantine observation schedule for new fish
Consistent observation is more useful than occasional staring. The schedule covers breathing, posture, appetite, waste, skin, fins, gills, social behaviour and water results at the same time each day.
fish healthquarantine & biosecuritydecision workflow
Quarantine & biosecurity10 min
Water-quality monitoring during quarantine
Small bare tanks can change faster than established displays. This guide shows why quarantine decisions need repeated ammonia, nitrite, temperature and pH context rather than assuming any new sign is infectious.
fish healthquarantine & biosecuritydecision workflow
Quarantine & biosecurity10 min
Feeding and appetite records during quarantine
Appetite is an early trend marker and also affects waste load. Recording what was offered, what was eaten and whether one individual hangs back can reveal deterioration before dramatic external signs appear.
fish healthquarantine & biosecuritydecision workflow
Quarantine & biosecurity10 min
Acclimation is not quarantine: understanding the difference
Acclimation manages the immediate transition between water conditions; quarantine manages disease risk over time. A smooth acclimation does not prove that a new fish is free of transmissible disease.
fish healthquarantine & biosecuritydecision workflow
Quarantine & biosecurity10 min
Keeping nets, siphons and tools separate between aquariums
Wet equipment can move water, mucus, eggs, spores, parasites and microbes. Dedicated or clearly assigned tools reduce the number of invisible links between otherwise separate systems.
fish healthquarantine & biosecuritydecision workflow
Quarantine & biosecurity10 min
Cleaning and disinfecting aquarium nets and siphons between tanks
Effective decontamination requires removing organic material first, then using an appropriate process and allowing equipment to dry when practical. A quick rinse is not the same as a controlled biosecurity step.
fish healthquarantine & biosecuritydecision workflow
Quarantine & biosecurity10 min
Clean-to-dirty workflow for multi-tank fish rooms
The order you work through tanks matters. Healthy or high-value quarantine-free systems should generally be handled before suspect, isolation or treatment systems so hands and tools do not carry risk backwards.
fish healthquarantine & biosecuritydecision workflow
Quarantine & biosecurity10 min
Hand, glove and splash hygiene around multiple aquariums
Hands, sleeves, towels and splashes can connect tanks just as nets do. This guide focuses on practical barriers and workflow rather than attempting to make a fish room sterile.
fish healthquarantine & biosecuritydecision workflow
Quarantine & biosecurity10 min
Moving fish between tanks without moving disease with them
Moving the fish is only one part of a transfer. Water, bags, nets, containers and destination equipment all create pathways that should be considered before a fish crosses from one system to another.
fish healthquarantine & biosecuritydecision workflow
Quarantine & biosecurity10 min
Hospital tank versus quarantine tank: when each is appropriate
A hospital tank is for treatment or close management of affected fish; quarantine is a biosecurity barrier for arrivals. Keeping those purposes separate makes observation and outbreak tracing much clearer.
fish healthquarantine & biosecuritydecision workflow
Quarantine & biosecurity10 min
Disease biosecurity for plants moved between fish systems
Plants can carry water, detritus, eggs, snails and other biological material between tanks even when the plant itself is not diseased. This guide focuses on keeping plant transfers from bypassing fish quarantine.
fish healthquarantine & biosecuritydecision workflow
Quarantine & biosecurity10 min
Disease biosecurity for shrimp, snails and other invertebrates
Invertebrates may share water or equipment with fish before purchase and can transfer water or hitchhiking material into a display. The guide focuses on source history and separation without assuming every invertebrate is a fish-pathogen carrier.
fish healthquarantine & biosecuritydecision workflow
Quarantine & biosecurity10 min
Live-food biosecurity: reducing pathogen transfer between cultures and fish
Live food can be excellent nutrition but creates another biological pathway into the aquarium. Separate culture tools, clean source water and avoiding cross-feeding between suspect systems reduce that pathway.
fish healthquarantine & biosecuritydecision workflow
Quarantine & biosecurity10 min
Used aquarium equipment: cleaning, drying and quarantine before reuse
Second-hand filters, hoses, décor and tanks may carry organic debris or viable disease agents. This guide separates physical cleaning, disinfection, drying and re-establishing biological filtration.
fish healthquarantine & biosecuritydecision workflow
Quarantine & biosecurity10 min
Disposing of transport water, aquarium water and dead fish safely in Australia
Biosecurity continues after the fish leaves the tank. This guide aligns hobby practice with current Australian advice not to release aquarium animals, carcasses or suspect aquarium water into waterways or stormwater.
fish healthquarantine & biosecuritydecision workflow
Quarantine & biosecurity10 min
Decontaminating a tank after a suspected infectious outbreak
The correct process depends on the suspected agent, materials and whether the system can be emptied. This guide explains the planning sequence—remove organic material, separate porous items, choose an appropriate method and verify the tank is safe before reuse.
fish healthquarantine & biosecuritydecision workflow
Quarantine & biosecurity10 min
Restocking after an outbreak: how to decide when a tank is ready
A calendar date alone does not prove an outbreak is over. Restocking should follow resolution of the cause, stable water, an appropriate fallow or decontamination plan when relevant, and no unexplained continuing losses.
fish healthquarantine & biosecuritydecision workflow
Treatment principles10 min
Supportive care for a sick fish while the diagnosis is uncertain
When the diagnosis is unclear, high-quality supportive care can buy time without destroying diagnostic evidence. Stable water, oxygenation, low stress and careful monitoring are often more defensible than adding multiple products at once.
fish healthtreatment principlesdecision workflow
Treatment principles10 min
Protecting water quality while fish are being treated
Treatment can change feeding, waste, oxygen demand and biofilter performance. This guide treats water quality as part of therapy rather than something to check only if medication appears to fail.
fish healthtreatment principlesdecision workflow
Treatment principles10 min
Oxygenation during fish treatment: why it matters
Sick fish may already have impaired gills or increased oxygen demand, and some treatments or warmer water can narrow the safety margin. Monitoring breathing and gas exchange is therefore part of treatment safety.
fish healthtreatment principlesdecision workflow
Treatment principles10 min
Feeding sick fish: appetite, fasting and recovery principles
Food can support recovery, but uneaten food can also worsen water quality and some diagnostic tests depend on appetite. This guide helps decide when to offer small observable feeds and when reduced feeding is safer.
fish healthtreatment principlesdecision workflow
Treatment principles10 min
Water changes before, during and after fish treatment
Water changes can reduce pollutants but can also alter treatment concentration or water chemistry. The correct plan depends on the product label, the diagnosis and the reason for the water change rather than a universal schedule.
fish healthtreatment principlesdecision workflow
Treatment principles10 min
Activated carbon and chemical filtration during medication
Carbon, resins and other media can adsorb some compounds while leaving others largely unaffected. This guide explains why the product label and treatment goal should determine whether chemical media stays online.
fish healthtreatment principlesdecision workflow
Treatment principles10 min
UV sterilisation, ozone and medication: when equipment can interfere
UV and ozone can alter some dissolved compounds and also affect free-living pathogens. The guide helps separate the role of this equipment in system management from the chemistry of a specific treatment.
fish healthtreatment principlesdecision workflow
Treatment principles10 min
Choosing a hospital-tank treatment to protect the display biofilter
Moving a fish to a hospital tank can isolate medication from the display biofilter and tankmates, but only if the hospital system itself has safe water and the move does not create more stress than benefit.
fish healthtreatment principlesdecision workflow
Treatment principles10 min
Antimicrobial stewardship for aquarium fish
Antibiotics are not a substitute for diagnosis, water correction or parasite control. Responsible use means veterinary oversight where required, obtaining culture and susceptibility data when practical, and avoiding repeated empirical courses that select for resistance.
fish healthtreatment principlesdecision workflow
Treatment principles10 min
Why bacterial culture can change antibiotic choice
Different bacteria—and different strains of the same species—may respond differently to antimicrobials. Culture and susceptibility results can narrow treatment and reduce unnecessary exposure when a bacterial infection is truly involved.
fish healthtreatment principlesdecision workflow
Treatment principles10 min
Treating external parasites: matching control to the life cycle
External parasites differ in where they live and whether vulnerable stages occur on the fish or in the environment. Treatment planning should therefore be based on identification and life cycle rather than assuming one exposure treats every stage.
fish healthtreatment principlesdecision workflow
Treatment principles10 min
Treating internal parasites: why diagnosis and life cycle matter
Internal parasites can involve the gut, tissues or intermediate hosts. A visible worm or abnormal faeces is not enough to choose a treatment route without considering where the parasite is and how reinfection occurs.
fish healthtreatment principlesdecision workflow
Treatment principles10 min
Managing suspected bacterial disease without shotgun medication
Ulcers, fin loss, redness and lethargy can occur after environmental injury as well as bacterial infection. This guide prioritises water, lesion pattern, culture where appropriate and targeted treatment rather than stacking antibiotics.
fish healthtreatment principlesdecision workflow
Treatment principles10 min
Managing suspected water-mould disease without shotgun treatment
Cotton-like material may represent water mould, damaged tissue, bacteria or debris. The guide focuses on confirming what is growing and correcting the injury or water conditions that allowed secondary colonisation.
fish healthtreatment principlesdecision workflow
Treatment principles10 min
Bath, in-tank and medicated-feed treatments: choosing the route
Route matters because a skin parasite, systemic bacterial infection and intestinal parasite are not exposed to a medicine in the same way. The guide compares decision factors without providing a dosing recipe.
fish healthtreatment principlesdecision workflow
Treatment principles10 min
Deciding whether to treat the display tank when invertebrates are present
A product safe for one fish may be hazardous to shrimp, snails, corals or other invertebrates. The decision is whether the whole system must be treated or affected fish can be managed separately.
fish healthtreatment principlesdecision workflow
Treatment principles10 min
Deciding whether to treat the display tank when sensitive plants are present
Some treatments can injure plants or disrupt planted-tank chemistry. This guide weighs hospital-tank treatment, the organism’s environmental stages and the need to treat the display itself.
fish healthtreatment principlesdecision workflow
Treatment principles10 min
Water chemistry and medication performance: pH, hardness and organics
Water chemistry can change drug availability, stability or toxicity, while organic matter can bind or inactivate some compounds. The product label and veterinary advice should be interpreted in the actual aquarium water, not in isolation.
fish healthtreatment principlesdecision workflow
Treatment principles10 min
Monitoring whether a fish treatment is actually working
Improvement should be defined before treatment starts: breathing, appetite, lesion size, mortality, behaviour or laboratory result. Without a baseline, normal day-to-day variation can be mistaken for success or failure.
fish healthtreatment principlesdecision workflow
Treatment principles10 min
When treatment is failing: stop, reassess and seek diagnostics
Failure can mean wrong diagnosis, resistance, inadequate delivery, reinfection, ongoing environmental injury or irreversible disease. Adding more medicines without identifying which explanation fits can make the next diagnostic step harder.
fish healthtreatment principlesdecision workflow
Outbreak investigation10 min
Building an aquarium outbreak line list: tracking each fish and tank
A line list gives every affected fish or tank one row with onset, signs, outcome and exposures. Even in a home fish room, this simple structure can reveal clusters that memory misses.
fish healthoutbreak investigationdecision workflow
Outbreak investigation10 min
Reading an outbreak timeline: exposure window, onset and progression
Plotting when fish were introduced, maintained, medicated and first became ill helps define plausible exposure windows. Timing cannot prove a cause, but it can rule some explanations up or down.
fish healthoutbreak investigationdecision workflow
Outbreak investigation10 min
High illness but low mortality: what the outbreak pattern suggests
When many fish show signs but few die, the pattern differs from a peracute toxic event or highly lethal outbreak. The guide shows how to compare severity, duration and recovery across the group.
fish healthoutbreak investigationdecision workflow
Outbreak investigation10 min
High mortality with few warning signs: what the pattern suggests
Rapid deaths with little visible illness raise concern for severe environmental failures, toxic exposure or fast-moving systemic disease. The pattern demands immediate water and equipment checks alongside diagnostic sampling.
fish healthoutbreak investigationdecision workflow
Outbreak investigation10 min
Persistent low-level losses versus a sudden mortality cluster
One fish every week for months and ten fish in one morning are different epidemiologic shapes. This guide shows how mortality curves change the investigation and the urgency of shared-exposure checks.
fish healthoutbreak investigationdecision workflow
Outbreak investigation10 min
Cases confined to one aquarium in a multi-tank fish room
A single affected tank suggests tank-specific water, equipment, stocking, feed or exposure before assuming a room-wide disease. It also provides an opportunity to keep the problem contained.
fish healthoutbreak investigationdecision workflow
Outbreak investigation10 min
Cases spreading through aquariums that share the same water system
Shared sumps and recirculation can make several display tanks one epidemiologic unit. The investigation should map water flow and timing rather than treating each tank as independent.
fish healthoutbreak investigationdecision workflow
Outbreak investigation10 min
Cases appearing across separate tanks that share nets or siphons
When tanks do not share water but do share equipment, the contact network matters. A common net, bucket or siphon can explain spread patterns that otherwise look mysterious.
fish healthoutbreak investigationdecision workflow
Outbreak investigation10 min
Only recent arrivals are affected: interpreting the cohort pattern
If established fish remain well while one arrival cohort becomes sick, transport stress, source-specific exposure, incubation period and acclimation conditions deserve focused review.
fish healthoutbreak investigationdecision workflow
Outbreak investigation10 min
Juveniles are affected more than adults: interpreting age-related risk
Age can change immunity, gill surface-to-body ratio, diet, stocking density and pathogen susceptibility. A juvenile-heavy pattern should be documented rather than flattened into a generic whole-tank diagnosis.
fish healthoutbreak investigationdecision workflow
Outbreak investigation10 min
Adults are affected more than juveniles: interpreting age-related risk
The opposite age pattern can point toward reproductive stress, cumulative exposure, chronic organ disease or adult-specific husbandry. The guide shows how to compare cohorts systematically.
fish healthoutbreak investigationdecision workflow
Outbreak investigation10 min
Contact tracing after fish were moved between aquariums
Transfers create a timeline of who shared water, bags, nets, holding containers and destination tanks. Mapping those contacts can identify the most likely route of spread and which tanks need closer observation.
fish healthoutbreak investigationdecision workflow
Outbreak investigation10 min
Investigating an outbreak linked to one batch of food
If illness clusters after a particular food container or culture, retain the label or batch information and compare exposed with unexposed fish. Do not assume the food is guilty simply because the timing is memorable.
fish healthoutbreak investigationdecision workflow
Outbreak investigation10 min
Investigating an outbreak linked to a shared source-water event
Several tanks changing after the same source-water event can implicate disinfectant, temperature, pH, metals or another shared factor. Testing stored or fresh source water may be more informative than testing only corrected aquarium water later.
fish healthoutbreak investigationdecision workflow
Outbreak investigation10 min
Investigating an outbreak after a maintenance session
Maintenance can connect tanks through tools, disturb waste, alter temperature, remove biofilter capacity or introduce residues. Reconstruct the exact order of work rather than treating “maintenance” as one exposure.
fish healthoutbreak investigationdecision workflow
Outbreak investigation10 min
Recurrent illness after apparent recovery: relapse, reinfection or unresolved cause
Recurring signs can mean the original disease persisted, fish were re-exposed, environmental damage continues or the first diagnosis was incomplete. The guide uses timing and treatment response to separate those possibilities.
fish healthoutbreak investigationdecision workflow
Outbreak investigation10 min
Outbreak after mixing fish from previously separate systems
Combining populations also combines their microbes, parasite histories, immunity and water conditions. The outbreak investigation should track which source group developed signs first and whether one cohort remained unaffected.
fish healthoutbreak investigationdecision workflow
Outbreak investigation10 min
Comparing attack rates between species, tanks and age groups
Simple proportions—how many exposed fish became ill in each group—can reveal host or exposure differences. The goal is not advanced statistics; it is to stop treating every fish as equally exposed when they were not.
fish healthoutbreak investigationdecision workflow
Outbreak investigation10 min
Deciding whether an outbreak is infectious, environmental or both
Infectious and environmental causes are not mutually exclusive. Poor water can injure gills and increase susceptibility, while an infection can become obvious only after a stressor. The investigation should allow more than one cause.
fish healthoutbreak investigationdecision workflow
Outbreak investigation10 min
Deciding when an aquarium outbreak can be considered over
The absence of new deaths for a few days is encouraging but not universal proof that transmission has stopped. The end point should fit the suspected cause, observation period, diagnostic evidence and any decontamination or fallow plan.
fish healthoutbreak investigationdecision workflow
Health guide10 min
Aquarium hospital tank setup
Set up a simple observation or treatment tank without creating another unstable system.
hospital tanktreatmentquarantine
Health guide9 min
Fish disease observation checklist
Record symptoms, timing, water conditions and affected fish before choosing a treatment.
fish diseasesymptomsdiagnosis
Why is my fish bloated?
Separate overfeeding, constipation, eggs, internal disease and fluid retention using observation and water tests.
Read guide →Fish healthIs it fin rot or physical fin damage?
Use the pattern, progression and tank history to distinguish injury from active tissue loss.
Read guide →Fish healthWhy is my fish floating, sinking or swimming sideways?
Investigate buoyancy problems as a symptom with many possible causes.
Read guide →Fish healthWhen should I contact an aquatic veterinarian?
Recognise signs that exceed safe home troubleshooting.
Read guide →Fish healthWhat should I do if fish have white spots?
Respond safely to possible ich while considering look-alike conditions.
Read guide →Fish healthWhy is my fish rubbing against objects?
Investigate flashing as irritation from water, parasites or physical damage.
Read guide →Fish healthWhy are my fish holding their fins clamped?
Use clamped fins as a general stress signal requiring water and health checks.
Read guide →Fish healthWhy are my fish gills red or inflamed?
Assess ammonia, nitrite, irritants, parasites and normal species colouration.
Read guide →Fish healthWhat does white stringy fish waste mean?
Interpret abnormal faeces with appetite, diet and body condition.
Read guide →Fish healthWhy is my fish eye cloudy or swollen?
Separate injury, poor water and systemic disease in eye problems.
Read guide →Practical guide9 min
Why is my fish breathing fast?
Separate oxygen and water-quality emergencies from gill disease, stress and normal short-term exertion.
rapid breathinggillsoxygen
Practical guide9 min
Why is my fish lying on the bottom?
Check whether the behaviour is normal rest, stress, buoyancy trouble, water-quality injury or advanced illness.
bottom sittinglethargybuoyancy
Practical guide8 min
Why is my fish losing colour?
Colour loss can reflect stress, lighting, social state, poor water, nutrition or disease; assess the full context before treating.
colour lossstressnutrition
Practical guide10 min
What does pineconing or dropsy mean in fish?
Raised scales and body swelling indicate serious fluid imbalance or internal disease and require urgent isolation and professional assessment.
pineconingdropsyswelling
Practical guide9 min
What is the cotton-like growth on my fish?
Cottony material may be fungal growth, bacterial disease, mucus or debris; identify the location and underlying injury before treatment.
cotton growthfungusbacterial lesion
Practical guide10 min
What causes mouth rot in aquarium fish?
Mouth erosion can follow injury, bacterial disease or poor water and can quickly prevent feeding, so it needs prompt diagnosis.
mouth rotoral lesionbacterial disease
Practical guide10 min
What should I do about open sores or ulcers on fish?
Open ulcers are serious breaks in the skin barrier; correct the environment, isolate safely and obtain a diagnosis before targeted treatment.
ulceropen sorewound
Practical guide10 min
What are the visible worms on my fish?
External parasites, anchor worms, leeches and protruding internal worms require identification because treatments and life cycles differ.
visible wormsparasitesanchor worm
Practical guide10 min
How long should new aquarium fish be quarantined?
Quarantine should be long enough to observe feeding, waste, breathing and disease across time; a fixed number of days cannot remove all risk.
quarantinenew fishbiosecurity
Practical guide10 min
Should I add aquarium salt to freshwater fish tanks?
Salt is a targeted treatment or management tool for selected species and conditions, not a routine requirement for every freshwater aquarium.
aquarium saltfreshwatertreatment
Practical guide10 min
Will fish medication damage the biological filter?
Some medications and carriers can affect nitrifying microbes, oxygen or water tests, so monitor ammonia and nitrite throughout treatment.
medicationbiofilterammonia
Practical guide10 min
When is humane euthanasia appropriate for a fish?
Euthanasia may be the kindest option when suffering is severe, irreversible and cannot be adequately relieved; use a method accepted for the species and situation.
euthanasiafish welfareveterinary care
Disease profile10 min
Freshwater ich (Ichthyophthirius multifiliis)
Identify the typical pattern, look-alikes and diagnostic steps for freshwater ich (ichthyophthirius multifiliis) without treating symptoms as proof.
diseasefreshwaterparasites
Disease profile10 min
Marine ich (Cryptocaryon irritans)
Identify the typical pattern, look-alikes and diagnostic steps for marine ich (cryptocaryon irritans) without treating symptoms as proof.
diseasemarineparasites
Disease profile10 min
Freshwater velvet (Piscinoodinium)
Identify the typical pattern, look-alikes and diagnostic steps for freshwater velvet (piscinoodinium) without treating symptoms as proof.
diseasefreshwaterparasites
Disease profile10 min
Marine velvet (Amyloodinium)
Identify the typical pattern, look-alikes and diagnostic steps for marine velvet (amyloodinium) without treating symptoms as proof.
diseasemarineparasites
Disease profile10 min
Ichthyobodo (Costia) infection
Identify the typical pattern, look-alikes and diagnostic steps for ichthyobodo (costia) infection without treating symptoms as proof.
diseasefreshwaterparasites
Disease profile10 min
Chilodonella infection
Identify the typical pattern, look-alikes and diagnostic steps for chilodonella infection without treating symptoms as proof.
diseasefreshwaterparasites
Disease profile10 min
Trichodina infection
Identify the typical pattern, look-alikes and diagnostic steps for trichodina infection without treating symptoms as proof.
diseasefreshwaterparasites
Disease profile10 min
Tetrahymena infection
Identify the typical pattern, look-alikes and diagnostic steps for tetrahymena infection without treating symptoms as proof.
diseasefreshwaterparasites
Disease profile10 min
Epistylis on aquarium fish
Identify the typical pattern, look-alikes and diagnostic steps for epistylis on aquarium fish without treating symptoms as proof.
diseasefreshwaterparasites
Disease profile10 min
Brooklynella infection
Identify the typical pattern, look-alikes and diagnostic steps for brooklynella infection without treating symptoms as proof.
diseasemarineparasites
Disease profile10 min
Uronema infection
Identify the typical pattern, look-alikes and diagnostic steps for uronema infection without treating symptoms as proof.
diseasemarineparasites
Disease profile10 min
Spironucleus / Hexamita-type intestinal flagellates
Identify the typical pattern, look-alikes and diagnostic steps for spironucleus / hexamita-type intestinal flagellates without treating symptoms as proof.
diseasefreshwaterparasites
Disease profile10 min
Hole-in-the-head syndrome in cichlids
Identify the typical pattern, look-alikes and diagnostic steps for hole-in-the-head syndrome in cichlids without treating symptoms as proof.
diseasefreshwaterparasites
Disease profile10 min
Coccidiosis in fish
Identify the typical pattern, look-alikes and diagnostic steps for coccidiosis in fish without treating symptoms as proof.
diseasefreshwaterparasites
Disease profile10 min
Whirling disease (Myxobolus cerebralis)
Identify the typical pattern, look-alikes and diagnostic steps for whirling disease (myxobolus cerebralis) without treating symptoms as proof.
diseasefreshwaterparasites
Disease profile10 min
Gill flukes (Dactylogyrus and related monogeneans)
Identify the typical pattern, look-alikes and diagnostic steps for gill flukes (dactylogyrus and related monogeneans) without treating symptoms as proof.
diseasefreshwaterparasites
Disease profile10 min
Skin flukes (Gyrodactylus and related monogeneans)
Identify the typical pattern, look-alikes and diagnostic steps for skin flukes (gyrodactylus and related monogeneans) without treating symptoms as proof.
diseasefreshwaterparasites
Disease profile10 min
Marine skin and eye flukes (Neobenedenia-type)
Identify the typical pattern, look-alikes and diagnostic steps for marine skin and eye flukes (neobenedenia-type) without treating symptoms as proof.
diseasemarineparasites
Disease profile10 min
Camallanus worms
Identify the typical pattern, look-alikes and diagnostic steps for camallanus worms without treating symptoms as proof.
diseasefreshwaterparasites
Disease profile10 min
Capillaria and Pseudocapillaria worms
Identify the typical pattern, look-alikes and diagnostic steps for capillaria and pseudocapillaria worms without treating symptoms as proof.
diseasefreshwaterparasites
Disease profile10 min
Tapeworms (cestodes) in aquarium fish
Identify the typical pattern, look-alikes and diagnostic steps for tapeworms (cestodes) in aquarium fish without treating symptoms as proof.
diseasefreshwaterparasites
Disease profile10 min
Anchor worm (Lernaea)
Identify the typical pattern, look-alikes and diagnostic steps for anchor worm (lernaea) without treating symptoms as proof.
diseasefreshwaterparasites
Disease profile10 min
Fish lice (Argulus)
Identify the typical pattern, look-alikes and diagnostic steps for fish lice (argulus) without treating symptoms as proof.
diseasefreshwaterargulus
Disease profile10 min
Ergasilus and other gill copepods
Identify the typical pattern, look-alikes and diagnostic steps for ergasilus and other gill copepods without treating symptoms as proof.
diseasefreshwaterparasites
Disease profile10 min
Leech infestation in fish
Identify the typical pattern, look-alikes and diagnostic steps for leech infestation in fish without treating symptoms as proof.
diseasefreshwaterparasites
Disease profile10 min
Black spot disease from trematode larvae
Identify the typical pattern, look-alikes and diagnostic steps for black spot disease from trematode larvae without treating symptoms as proof.
diseasefreshwaterparasites
Disease profile10 min
Eye flukes (Diplostomum-type trematodes)
Identify the typical pattern, look-alikes and diagnostic steps for eye flukes (diplostomum-type trematodes) without treating symptoms as proof.
diseasefreshwaterparasites
Disease profile10 min
Saprolegnia water mould
Identify the typical pattern, look-alikes and diagnostic steps for saprolegnia water mould without treating symptoms as proof.
diseasefreshwaterparasites
Disease profile10 min
Branchiomycosis (fungal-like gill rot)
Identify the typical pattern, look-alikes and diagnostic steps for branchiomycosis (fungal-like gill rot) without treating symptoms as proof.
diseasefreshwaterparasites
Disease profile10 min
Epizootic ulcerative syndrome (Aphanomyces invadans)
Identify the typical pattern, look-alikes and diagnostic steps for epizootic ulcerative syndrome (aphanomyces invadans) without treating symptoms as proof.
diseasefreshwaterparasites
Disease profile10 min
Columnaris disease (Flavobacterium columnare)
Identify the typical pattern, look-alikes and diagnostic steps for columnaris disease (flavobacterium columnare) without treating symptoms as proof.
diseasefreshwaterbacteria
Disease profile10 min
Aeromonas-associated haemorrhagic septicaemia
Identify the typical pattern, look-alikes and diagnostic steps for aeromonas-associated haemorrhagic septicaemia without treating symptoms as proof.
diseasefreshwaterbacteria
Disease profile10 min
Pseudomonas infection in fish
Identify the typical pattern, look-alikes and diagnostic steps for pseudomonas infection in fish without treating symptoms as proof.
diseasefreshwaterbacteria
Disease profile10 min
Vibriosis in aquarium fish
Identify the typical pattern, look-alikes and diagnostic steps for vibriosis in aquarium fish without treating symptoms as proof.
diseasemarinebacteria
Disease profile10 min
Edwardsiella infection and enteric septicaemia
Identify the typical pattern, look-alikes and diagnostic steps for edwardsiella infection and enteric septicaemia without treating symptoms as proof.
diseasefreshwaterbacteria
Disease profile10 min
Streptococcosis in fish
Identify the typical pattern, look-alikes and diagnostic steps for streptococcosis in fish without treating symptoms as proof.
diseasefreshwaterbacteria
Disease profile10 min
Fish mycobacteriosis (fish tuberculosis)
Identify the typical pattern, look-alikes and diagnostic steps for fish mycobacteriosis (fish tuberculosis) without treating symptoms as proof.
diseasefreshwatermycobacteria
Disease profile10 min
Bacterial gill disease
Identify the typical pattern, look-alikes and diagnostic steps for bacterial gill disease without treating symptoms as proof.
diseasefreshwaterbacteria
Disease profile10 min
Bacterial kidney disease
Identify the typical pattern, look-alikes and diagnostic steps for bacterial kidney disease without treating symptoms as proof.
diseasefreshwaterbacteria
Disease profile10 min
Enteric redmouth disease
Identify the typical pattern, look-alikes and diagnostic steps for enteric redmouth disease without treating symptoms as proof.
diseasefreshwater,bacteria
Disease profile10 min
Furunculosis
Identify the typical pattern, look-alikes and diagnostic steps for furunculosis without treating symptoms as proof.
diseasefreshwater,bacteria
Disease profile10 min
Epitheliocystis
Identify the typical pattern, look-alikes and diagnostic steps for epitheliocystis without treating symptoms as proof.
diseasefreshwaterbacteria
Disease profile10 min
Francisellosis in fish
Identify the typical pattern, look-alikes and diagnostic steps for francisellosis in fish without treating symptoms as proof.
diseasefreshwaterbacteria
Disease profile10 min
Lymphocystis disease
Identify the typical pattern, look-alikes and diagnostic steps for lymphocystis disease without treating symptoms as proof.
diseasefreshwaterviruses
Disease profile10 min
Koi herpesvirus disease (KHV)
Identify the typical pattern, look-alikes and diagnostic steps for koi herpesvirus disease (khv) without treating symptoms as proof.
diseasefreshwaterviruses
Disease profile10 min
Goldfish herpesvirus disease (CyHV-2)
Identify the typical pattern, look-alikes and diagnostic steps for goldfish herpesvirus disease (cyhv-2) without treating symptoms as proof.
diseasefreshwaterviruses
Disease profile10 min
Carp pox
Identify the typical pattern, look-alikes and diagnostic steps for carp pox without treating symptoms as proof.
diseasefreshwaterviruses
Disease profile10 min
Spring viraemia of carp (SVC)
Identify the typical pattern, look-alikes and diagnostic steps for spring viraemia of carp (svc) without treating symptoms as proof.
diseasefreshwaterviruses
Disease profile10 min
Viral haemorrhagic septicaemia (VHS)
Identify the typical pattern, look-alikes and diagnostic steps for viral haemorrhagic septicaemia (vhs) without treating symptoms as proof.
diseasefreshwaterviruses
Disease profile10 min
Megalocytivirus / ISKNV-like disease
Identify the typical pattern, look-alikes and diagnostic steps for megalocytivirus / isknv-like disease without treating symptoms as proof.
diseasefreshwaterviruses
Disease profile10 min
Dwarf gourami iridovirus–associated disease
Identify the typical pattern, look-alikes and diagnostic steps for dwarf gourami iridovirus–associated disease without treating symptoms as proof.
diseasefreshwaterviruses
Disease profile10 min
Viral nervous necrosis (betanodavirus)
Identify the typical pattern, look-alikes and diagnostic steps for viral nervous necrosis (betanodavirus) without treating symptoms as proof.
diseaseprimarilyviruses
Disease profile10 min
Herpesvirus-associated disease of angelfish
Identify the typical pattern, look-alikes and diagnostic steps for herpesvirus-associated disease of angelfish without treating symptoms as proof.
diseasefreshwaterviruses
Disease profile10 min
Epizootic haematopoietic necrosis (EHN)
Identify the typical pattern, look-alikes and diagnostic steps for epizootic haematopoietic necrosis (ehn) without treating symptoms as proof.
diseasefreshwaterviruses
Disease profile10 min
Infectious haematopoietic necrosis (IHN)
Identify the typical pattern, look-alikes and diagnostic steps for infectious haematopoietic necrosis (ihn) without treating symptoms as proof.
diseasefreshwaterviruses
Disease profile10 min
Neon tetra disease (Pleistophora-type microsporidiosis)
Identify the typical pattern, look-alikes and diagnostic steps for neon tetra disease (pleistophora-type microsporidiosis) without treating symptoms as proof.
diseasefreshwaterparasites
Disease profile10 min
Gas bubble disease
Identify the typical pattern, look-alikes and diagnostic steps for gas bubble disease without treating symptoms as proof.
diseasefreshwatersymptoms
Disease profile10 min
Head and lateral line erosion (HLLE)
Identify the typical pattern, look-alikes and diagnostic steps for head and lateral line erosion (hlle) without treating symptoms as proof.
diseasemarine;nutrition
Disease profile10 min
Nutritional deficiency disorders in aquarium fish
Identify the typical pattern, look-alikes and diagnostic steps for nutritional deficiency disorders in aquarium fish without treating symptoms as proof.
diseasefreshwaternutrition
Disease profile10 min
Tumours and neoplasia in fish
Identify the typical pattern, look-alikes and diagnostic steps for tumours and neoplasia in fish without treating symptoms as proof.
diseasefreshwaterneoplasia
Symptom guide8 min
Why does my fish look dusty, gold or velvet-coated?
A fine gold, rust or dusty sheen can point toward velvet parasites, but lighting, mucus and skin damage can look similar.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish producing excess slime or mucus?
A heavier slime coat is a general irritation response, not a single disease.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish skin peeling or sloughing?
Sloughing skin means the protective barrier is badly compromised and can follow parasites, toxins or severe infection.
symptomdifferentialfish health
Symptom guide8 min
What causes white or grey patches on fish skin?
Pale patches can come from mucus, bacterial disease, parasites, water mould, injury or colour change.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish have new black spots or dark patches?
New dark pigment can be a healing response, parasite-associated pigmentation, stress colour or a true mass.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish have red streaks or bleeding under the skin?
Red streaks and petechiae signal tissue or blood-vessel damage but do not identify the cause by themselves.
symptomdifferentialfish health
Symptom guide8 min
What are tiny white bumps on fish that are not classic ich?
White bumps can be normal anatomy or several different diseases, so size, location and progression matter.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish have cauliflower-like growths?
Cauliflower-like nodules commonly suggest lymphocystis but tumours, pox-like lesions and chronic inflammation can resemble it.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish have a lump or mass?
A persistent lump may be a tumour, cyst, abscess, granuloma, retained eggs or internal organ enlargement.
symptomdifferentialfish health
Symptom guide8 min
Why are pits or holes forming in my fish’s head?
Head pits are a syndrome with several possible contributors and should not automatically be labelled Hexamita.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish developing a curved or bent spine?
A spinal curve can be congenital, nutritional, traumatic or associated with chronic disease.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish losing weight quickly?
Rapid weight loss means energy intake or absorption is not matching demand and can accompany serious disease.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish getting skinny even though it still eats?
Good appetite with continued wasting raises concern for intestinal disease, parasites, malabsorption or severe competition.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish vent red or swollen?
A red or swollen vent can follow irritation, parasites, constipation, prolapse or systemic intestinal disease.
symptomdifferentialfish health
Symptom guide8 min
What are red worms protruding from my fish’s anus?
Red thread-like worms protruding from the vent strongly suggest intestinal nematodes such as Camallanus.
symptomdifferentialfish health
Symptom guide8 min
Why is tissue protruding from my fish’s vent?
A prolapse is exposed tissue, not a worm, and may follow straining, intestinal disease, egg problems or severe swelling.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish gills pale?
Pale gills can reflect anaemia, blood loss, severe chronic disease or sometimes normal variation.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish gills brown, black or discoloured?
Dark or brown gill tissue can follow chemical injury, necrosis, debris or pigment change and cannot be diagnosed by colour alone.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish breathing with only one gill?
Uneven gill movement can reflect local obstruction, injury, parasites or severe irritation on one side.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish holding their gill covers flared?
Persistently flared opercula can signal respiratory stress, irritation or structural damage.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish keep coughing or flicking its gills?
Fish can make repeated gill-clearing movements when the gills are irritated or obstructed.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish spinning or corkscrewing?
Spinning is a neurologic or balance sign with many possible causes, some of them reportable in susceptible species.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish suddenly darting around the tank?
Sudden darting may be irritation, fear, electrical/chemical disturbance or neurologic disease.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish headstanding or holding its tail up?
Abnormal posture can come from buoyancy problems, weakness, gut distension or neurologic disease.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish rolling or unable to stay upright?
Loss of balance is a serious nonspecific sign involving buoyancy, nervous system, weakness or toxins.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish twitching or shaking?
Twitching may reflect irritation, courtship or dominance displays, or abnormal neuromuscular activity.
symptomdifferentialfish health
Symptom guide8 min
Why has my fish suddenly turned much darker?
Rapid darkening is a common stress or illness response in many species but can also be normal signalling.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish losing scales?
Scale loss commonly follows trauma or aggression but parasites and skin disease can make scales detach more easily.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish fins frayed or splitting?
Frayed fins can be mechanical damage, biting or progressive tissue disease.
symptomdifferentialfish health
Symptom guide8 min
Why are the bases of my fish’s fins red?
Redness at fin bases can be irritation, trauma or part of systemic haemorrhagic disease.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish’s mouth stuck open?
An open mouth can result from injury, dislocation, swelling, obstruction or severe respiratory distress.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish take food then spit it out?
Spitting food may be normal tasting behaviour or signal mouth pain, unsuitable food, gill stress or internal illness.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish have a sunken belly?
A hollow abdomen usually indicates loss of body condition rather than a single parasite diagnosis.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish have blood in or around the eye?
Eye haemorrhage can follow trauma, pressure, severe systemic disease or blood-vessel injury.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish look unusually pale and weak?
General pallor can be stress colour loss, anaemia or chronic illness and needs context.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish have smooth waxy patches on the skin?
Smooth wax-like plaques are classically associated with carp pox in koi/carp but other growths can resemble them.
symptomdifferentialfish health
Symptom guide8 min
Why did several fish get sick after I added new fish?
A cluster after a new arrival can reflect an introduced pathogen, transport stress or a water/stocking change.
symptomdifferentialfish health
Symptom guide8 min
What can cause many fish to die suddenly at the same time?
When many fish collapse together, environmental and toxic causes must be checked before assuming an infectious disease.
symptomdifferentialfish health
Symptom guide8 min
Why do fish keep dying one by one over several weeks?
Slow recurring losses often need a timeline and diagnostics because chronic pathogens and husbandry problems can look alike.
symptomdifferentialfish health
Symptom guide8 min
Why are there white spots or excess mucus on my fish’s gills?
White material or excess mucus on the gills is a respiratory warning sign, but several parasites, infections and irritants can produce a similar appearance.
symptomdifferentialfish health
Disease profile10 min
Atypical Aeromonas salmonicida infection
Identify the typical pattern, look-alikes and diagnostic steps for atypical aeromonas salmonicida infection without treating symptoms as proof.
diseasefreshwaterreportable
Disease profile10 min
Enteric septicaemia of catfish (Edwardsiella ictaluri)
Identify the typical pattern, look-alikes and diagnostic steps for enteric septicaemia of catfish (edwardsiella ictaluri) without treating symptoms as proof.
diseasefreshwaterreportable
Disease profile10 min
Gyrodactylus salaris infection
Identify the typical pattern, look-alikes and diagnostic steps for gyrodactylus salaris infection without treating symptoms as proof.
diseasefreshwaterreportable
Disease profile10 min
Infectious salmon anaemia
Identify the typical pattern, look-alikes and diagnostic steps for infectious salmon anaemia without treating symptoms as proof.
diseasemarinereportable
Disease profile10 min
Red sea bream iridoviral disease
Identify the typical pattern, look-alikes and diagnostic steps for red sea bream iridoviral disease without treating symptoms as proof.
diseasemarinereportable
Disease profile10 min
Salmonid alphavirus infection (pancreas disease / sleeping disease)
Identify the typical pattern, look-alikes and diagnostic steps for salmonid alphavirus infection (pancreas disease / sleeping disease) without treating symptoms as proof.
diseasemarinereportable
Disease profile10 min
Scale drop disease virus infection
Identify the typical pattern, look-alikes and diagnostic steps for scale drop disease virus infection without treating symptoms as proof.
diseasemarinereportable
Disease profile10 min
Singapore grouper iridovirus infection
Identify the typical pattern, look-alikes and diagnostic steps for singapore grouper iridovirus infection without treating symptoms as proof.
diseasemarinereportable
Disease profile10 min
Tilapia lake virus disease
Identify the typical pattern, look-alikes and diagnostic steps for tilapia lake virus disease without treating symptoms as proof.
diseasefreshwaterreportable
Disease profile10 min
Turbot reddish body iridovirus infection
Identify the typical pattern, look-alikes and diagnostic steps for turbot reddish body iridovirus infection without treating symptoms as proof.
diseasemarinereportable
Disease profile10 min
Infectious pancreatic necrosis
Identify the typical pattern, look-alikes and diagnostic steps for infectious pancreatic necrosis without treating symptoms as proof.
diseasefreshwaterreportable
Disease profile10 min
Channel catfish virus disease
Identify the typical pattern, look-alikes and diagnostic steps for channel catfish virus disease without treating symptoms as proof.
diseasefreshwateraquaculture-viruses
Disease profile10 min
European catfish virus / European sheatfish virus disease
Identify the typical pattern, look-alikes and diagnostic steps for european catfish virus / european sheatfish virus disease without treating symptoms as proof.
diseasefreshwateraquaculture-viruses
Disease profile10 min
Piscirickettsiosis
Identify the typical pattern, look-alikes and diagnostic steps for piscirickettsiosis without treating symptoms as proof.
diseasemarineaquaculture-bacteria
Disease profile10 min
Largemouth bass virus disease
Identify the typical pattern, look-alikes and diagnostic steps for largemouth bass virus disease without treating symptoms as proof.
diseasefreshwateraquaculture-viruses
Disease profile10 min
Carp edema virus disease (koi sleepy disease)
Identify the typical pattern, look-alikes and diagnostic steps for carp edema virus disease (koi sleepy disease) without treating symptoms as proof.
diseasefreshwateraquaculture-viruses
Disease profile10 min
Salmon gill poxvirus disease
Identify the typical pattern, look-alikes and diagnostic steps for salmon gill poxvirus disease without treating symptoms as proof.
diseasefreshwateraquaculture-viruses
Disease profile10 min
Heart and skeletal muscle inflammation (HSMI)
Identify the typical pattern, look-alikes and diagnostic steps for heart and skeletal muscle inflammation (hsmi) without treating symptoms as proof.
diseasemarineaquaculture-viruses
Disease profile10 min
Cardiomyopathy syndrome of Atlantic salmon
Identify the typical pattern, look-alikes and diagnostic steps for cardiomyopathy syndrome of atlantic salmon without treating symptoms as proof.
diseasemarineaquaculture-viruses
Disease profile10 min
Viral erythrocytic necrosis
Identify the typical pattern, look-alikes and diagnostic steps for viral erythrocytic necrosis without treating symptoms as proof.
diseasemarineaquaculture-viruses
Disease profile10 min
Bacterial coldwater disease (Flavobacterium psychrophilum)
Identify the typical pattern, look-alikes and diagnostic steps for bacterial coldwater disease (flavobacterium psychrophilum) without treating symptoms as proof.
diseasefreshwateraquaculture-bacteria
Disease profile10 min
Tenacibaculosis
Identify the typical pattern, look-alikes and diagnostic steps for tenacibaculosis without treating symptoms as proof.
diseasemarineaquaculture-bacteria
Disease profile10 min
Lactococcosis (Lactococcus garvieae)
Identify the typical pattern, look-alikes and diagnostic steps for lactococcosis (lactococcus garvieae) without treating symptoms as proof.
diseasefreshwateraquaculture-bacteria
Disease profile10 min
Nocardiosis in fish
Identify the typical pattern, look-alikes and diagnostic steps for nocardiosis in fish without treating symptoms as proof.
diseasefreshwateraquaculture-bacteria
Disease profile10 min
Photobacteriosis / fish pasteurellosis
Identify the typical pattern, look-alikes and diagnostic steps for photobacteriosis / fish pasteurellosis without treating symptoms as proof.
diseasemarineaquaculture-bacteria
Disease profile10 min
Cold-water vibriosis (Hitra disease)
Identify the typical pattern, look-alikes and diagnostic steps for cold-water vibriosis (hitra disease) without treating symptoms as proof.
diseasemarineaquaculture-bacteria
Disease profile10 min
Flavobacterium branchiophilum gill disease
Identify the typical pattern, look-alikes and diagnostic steps for flavobacterium branchiophilum gill disease without treating symptoms as proof.
diseasefreshwateraquaculture-bacteria
Disease profile10 min
Streptococcus iniae infection
Identify the typical pattern, look-alikes and diagnostic steps for streptococcus iniae infection without treating symptoms as proof.
diseasefreshwateraquaculture-bacteria
Disease profile10 min
Edwardsiella piscicida infection
Identify the typical pattern, look-alikes and diagnostic steps for edwardsiella piscicida infection without treating symptoms as proof.
diseasefreshwateraquaculture-bacteria
Disease profile10 min
Motile aeromonad septicaemia (Aeromonas hydrophila complex)
Identify the typical pattern, look-alikes and diagnostic steps for motile aeromonad septicaemia (aeromonas hydrophila complex) without treating symptoms as proof.
diseasefreshwateraquaculture-bacteria
Disease profile10 min
Ichthyophoniasis (Ichthyophonus infection)
Identify the typical pattern, look-alikes and diagnostic steps for ichthyophoniasis (ichthyophonus infection) without treating symptoms as proof.
diseasemarinemycotic
Disease profile10 min
Dermocystidium-like infection
Identify the typical pattern, look-alikes and diagnostic steps for dermocystidium-like infection without treating symptoms as proof.
diseasefreshwateraquaculture-parasites
Disease profile10 min
Exophiala phaeohyphomycosis
Identify the typical pattern, look-alikes and diagnostic steps for exophiala phaeohyphomycosis without treating symptoms as proof.
diseasefreshwatermycotic
Disease profile10 min
Fusarium infection in fish
Identify the typical pattern, look-alikes and diagnostic steps for fusarium infection in fish without treating symptoms as proof.
diseasefreshwatermycotic
Disease profile10 min
Acanthocephalan (thorny-headed worm) infection
Identify the typical pattern, look-alikes and diagnostic steps for acanthocephalan (thorny-headed worm) infection without treating symptoms as proof.
diseasefreshwateraquaculture-parasites
Disease profile10 min
Yellow grub (Clinostomum) infection
Identify the typical pattern, look-alikes and diagnostic steps for yellow grub (clinostomum) infection without treating symptoms as proof.
diseasefreshwateraquaculture-parasites
Disease profile10 min
Pentastomid larval infection in fish
Identify the typical pattern, look-alikes and diagnostic steps for pentastomid larval infection in fish without treating symptoms as proof.
diseasefreshwateraquaculture-parasites
Disease profile10 min
Caligus sea-lice infestation
Identify the typical pattern, look-alikes and diagnostic steps for caligus sea-lice infestation without treating symptoms as proof.
diseasemarineaquaculture-parasites
Disease profile10 min
Lepeophtheirus sea-lice infestation
Identify the typical pattern, look-alikes and diagnostic steps for lepeophtheirus sea-lice infestation without treating symptoms as proof.
diseasemarineaquaculture-parasites
Disease profile10 min
Blood flagellate infection (Cryptobia / Trypanoplasma-type)
Identify the typical pattern, look-alikes and diagnostic steps for blood flagellate infection (cryptobia / trypanoplasma-type) without treating symptoms as proof.
diseasefreshwateraquaculture-parasites
Disease profile10 min
Cryptobia iubilans-associated cichlid disease
Identify the typical pattern, look-alikes and diagnostic steps for cryptobia iubilans-associated cichlid disease without treating symptoms as proof.
diseasefreshwateraquaculture-parasites
Disease profile10 min
Proliferative kidney disease (PKD)
Identify the typical pattern, look-alikes and diagnostic steps for proliferative kidney disease (pkd) without treating symptoms as proof.
diseasefreshwateraquaculture-parasites
Disease profile10 min
Ceratonova shasta infection (ceratomyxosis)
Identify the typical pattern, look-alikes and diagnostic steps for ceratonova shasta infection (ceratomyxosis) without treating symptoms as proof.
diseasefreshwateraquaculture-parasites
Disease profile10 min
Henneguya myxozoan infection
Identify the typical pattern, look-alikes and diagnostic steps for henneguya myxozoan infection without treating symptoms as proof.
diseasefreshwateraquaculture-parasites
Disease profile10 min
Kudoa myxozoan infection
Identify the typical pattern, look-alikes and diagnostic steps for kudoa myxozoan infection without treating symptoms as proof.
diseasemarineaquaculture-parasites
Disease profile10 min
Enteromyxum leei infection
Identify the typical pattern, look-alikes and diagnostic steps for enteromyxum leei infection without treating symptoms as proof.
diseasemarineaquaculture-parasites
Disease profile10 min
Glugea microsporidiosis
Identify the typical pattern, look-alikes and diagnostic steps for glugea microsporidiosis without treating symptoms as proof.
diseasefreshwatermycotic
Disease profile10 min
Asian fish tapeworm (Schyzocotyle acheilognathi)
Identify the typical pattern, look-alikes and diagnostic steps for asian fish tapeworm (schyzocotyle acheilognathi) without treating symptoms as proof.
diseasefreshwateraquaculture-parasites
Disease profile10 min
Eustrongylides red-worm larval infection
Identify the typical pattern, look-alikes and diagnostic steps for eustrongylides red-worm larval infection without treating symptoms as proof.
diseasefreshwateraquaculture-parasites
Disease profile10 min
Philometra and philometrid nematode infection
Identify the typical pattern, look-alikes and diagnostic steps for philometra and philometrid nematode infection without treating symptoms as proof.
diseasemarineaquaculture-parasites
Symptom guide8 min
Why is my fish gasping when ammonia and nitrite are normal?
Normal ammonia and nitrite do not rule out low oxygen, gill disease, chlorine/chloramine, temperature stress or other respiratory problems.
symptomdifferentialfish health
Symptom guide8 min
Why do my fish’s gills look swollen?
Swollen gill tissue can result from parasites, infection, chemical injury, chronic irritation or environmental stress.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish’s gills covered in mucus?
Excess gill mucus is a protective response to irritation and is not specific to one parasite or disease.
symptomdifferentialfish health
Symptom guide8 min
Why do my fish have white tips on the gills?
White gill tips can reflect damaged or necrotic tissue, mucus, parasites or healing injury and need close inspection.
symptomdifferentialfish health
Symptom guide8 min
Why do my fish’s gill filaments look shortened or eroded?
Loss of normal gill filament structure suggests significant gill injury and can have infectious or environmental causes.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish’s gills bleeding?
Visible gill bleeding can follow trauma, severe irritation, parasites or systemic haemorrhagic disease.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish keep yawning or stretching its mouth?
Repeated mouth opening can be normal occasionally but frequent “yawning” may accompany gill irritation, respiratory stress or oral problems.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish’s mouth and lips red?
Red lips or mouth tissue can result from abrasion, aggression, infection, chemical irritation or systemic haemorrhage.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish’s mouth eroding or ulcerated?
Mouth erosion is tissue damage, not a single diagnosis, and may involve trauma plus secondary infection.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish’s lips swollen?
Lip swelling can be caused by injury, infection, embedded material, chronic rubbing or a mass.
symptomdifferentialfish health
Symptom guide8 min
Why has my fish developed a crooked or deformed jaw?
Jaw deformity can be developmental, traumatic, nutritional, infectious or related to abnormal bone growth.
symptomdifferentialfish health
Symptom guide8 min
Why is only one of my fish’s eyes bulging?
One-sided exophthalmia often points more strongly to local trauma or infection than a whole-body fluid problem.
symptomdifferentialfish health
Symptom guide8 min
Why are both of my fish’s eyes bulging?
Bilateral exophthalmia can accompany systemic infection, fluid imbalance, severe environmental stress or gas supersaturation.
symptomdifferentialfish health
Symptom guide8 min
Why is the pupil or lens inside my fish’s eye cloudy?
Cloudiness inside the eye differs from surface haze and can reflect cataract, trauma, nutrition or internal eye disease.
symptomdifferentialfish health
Symptom guide8 min
Why is there a white film over my fish’s eye?
A white surface film may be mucus, corneal injury, infection or chemical irritation rather than a lens cataract.
symptomdifferentialfish health
Symptom guide8 min
What should I do if my fish has an injured or missing eye?
Fish can survive significant eye injury, but water quality, bleeding, infection risk and the cause of trauma need attention.
symptomdifferentialfish health
Symptom guide8 min
What is the worm or moving object in my fish’s eye?
Visible material in or around an eye can be a parasite, damaged tissue or debris and should not be pulled out blindly.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish have a saddle-shaped patch across its back?
A saddleback lesion is classically associated with some bacterial skin disease but trauma and other infections can look similar.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish have a grey or blue haze over its skin?
A grey-blue skin film often reflects excess mucus or surface injury and has many possible causes.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish’s skin look burned or raw?
Red raw skin can follow chemical injury, severe water-quality damage, abrasion or aggressive infection.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish have tiny red pinprick spots?
Pinpoint haemorrhages can be caused by systemic infection, trauma, toxins or severe stress and are not disease-specific.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish have purple or bruised-looking patches?
Dark purple or bruised areas may represent haemorrhage, trauma, inflammation or colour change over damaged tissue.
symptomdifferentialfish health
Symptom guide8 min
Why are only a few scales raised on my fish?
Localised scale lifting differs from whole-body pineconing and more often suggests focal swelling, trauma or a lesion underneath.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish have blister-like bubbles or vesicles on the skin?
True blisters are uncommon and can be confused with gas bubbles, cysts, parasites or swollen tissue.
symptomdifferentialfish health
Symptom guide8 min
Why are there bubbles under my fish’s skin or fins?
Gas visible under skin or fins raises concern for gas supersaturation but cysts and other lesions can mimic bubbles.
symptomdifferentialfish health
Symptom guide8 min
Why are strings of mucus hanging from my fish’s body?
Stringy skin mucus signals marked irritation and can accompany parasites, chemical injury or severe skin disease.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish have holes or pinholes in its fins?
Small fin holes may start with mechanical damage, fin biting, water-quality stress or early tissue disease.
symptomdifferentialfish health
Symptom guide8 min
Why are the edges of my fish’s fins turning white or opaque?
White fin edges can represent regrowth, mucus, necrosis or infection; the direction of change matters.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish’s fin edges turning black or dark?
Dark fin edges may be pigment during healing, necrotic tissue, ammonia-related damage or normal colour change.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish’s tail disappearing quickly?
Rapid tail erosion is more concerning than a stable tear and can reflect severe bacterial disease, aggression or ongoing environmental injury.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish holding only one fin clamped?
A single clamped fin suggests local pain, injury or irritation more than a whole-body stress response.
symptomdifferentialfish health
Symptom guide8 min
Why is only one side of my fish’s belly swollen?
Asymmetric abdominal swelling is more suggestive of a focal mass, organ enlargement, egg/reproductive problem or local lesion than simple overfeeding.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish’s belly look red or translucent?
A red or translucent abdomen can reflect thin body wall, internal haemorrhage, inflammation or severe systemic disease.
symptomdifferentialfish health
Symptom guide8 min
Why is there blood or mucus in my fish’s faeces?
Blood or heavy mucus in faeces points to intestinal irritation and needs more attention than colour alone.
symptomdifferentialfish health
Symptom guide8 min
Why are worms or segments coming out in my fish’s faeces?
Visible worm-like material can be nematodes, tapeworm segments, mucus or food material and identification matters before treatment.
symptomdifferentialfish health
Symptom guide8 min
Why is undigested food coming out in my fish’s faeces?
Recognisable food in faeces can reflect overfeeding, poor digestion, inappropriate diet, intestinal disease or rapid gut transit.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish swallow food and then bring it back up?
Regurgitation differs from simply spitting a food item and can involve oral, pharyngeal, gastrointestinal or systemic disease.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish have trouble swallowing food?
Difficulty swallowing can follow mouth injury, jaw deformity, obstruction, gill/oral disease or neurologic problems.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish suddenly bumping into things like it cannot see?
Sudden apparent blindness can come from eye injury, cataract, parasites, neurologic disease or severe water/chemical events.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish keep missing food when it tries to eat?
Repeatedly missing food may indicate reduced vision, depth-perception problems, mouth dysfunction or neurologic disease.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish sink whenever it stops swimming?
Excess negative buoyancy can involve swim-bladder dysfunction, body condition, internal disease or normal species anatomy.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish floating uncontrollably at the surface?
Persistent uncontrolled positive buoyancy can follow swim-bladder problems, intestinal gas, internal masses or injury.
symptomdifferentialfish health
Symptom guide8 min
Why can’t my fish rise from the bottom?
A fish that tries but cannot rise may have buoyancy failure, profound weakness, neurologic disease or severe respiratory/systemic illness.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish swimming backwards?
Brief backward movement can be normal in some situations, but persistent backward swimming may indicate neurologic, vestibular or severe stress problems.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish having tremors or seizure-like episodes?
Tremors and seizure-like movement can arise from toxins, extreme water chemistry, neurologic infection, temperature shock or severe systemic disease.
symptomdifferentialfish health
Symptom guide8 min
Why are all my fish suddenly hyperactive or panicking?
Sudden whole-tank panic is often environmental or chemical until proven otherwise.
symptomdifferentialfish health
Symptom guide8 min
Why did my fish become lethargic after a water change?
A close timing relationship to a water change raises concern for temperature, pH, chlorine/chloramine, dissolved-gas or contaminant problems.
symptomdifferentialfish health
Symptom guide8 min
Why do my fish crowd the surface mostly at night?
Night-time surface crowding can occur when oxygen falls after lights-out, especially in heavily planted or biologically loaded systems.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish gathering around the filter outlet?
Fish may seek a filter outlet for higher oxygen or flow, but species preference and irritation can also influence the behaviour.
symptomdifferentialfish health
Symptom guide8 min
Why did my fish get worse after I added medication?
Deterioration after medication may reflect drug sensitivity, oxygen reduction, overdose, interaction, wrong diagnosis or the disease progressing independently.
symptomdifferentialfish health
Disease / condition profile10 min
Ammonia toxicity
Identify the pattern, look-alikes and diagnostic steps for ammonia toxicity without treating symptoms as proof.
diseaseenvironmentalfish health
Disease / condition profile10 min
Nitrite toxicity (brown blood disease)
Identify the pattern, look-alikes and diagnostic steps for nitrite toxicity (brown blood disease) without treating symptoms as proof.
diseaseenvironmentalfish health
Disease / condition profile10 min
Chronic nitrate toxicity
Identify the pattern, look-alikes and diagnostic steps for chronic nitrate toxicity without treating symptoms as proof.
diseaseenvironmentalfish health
Disease / condition profile10 min
Chlorine and chloramine toxicity
Identify the pattern, look-alikes and diagnostic steps for chlorine and chloramine toxicity without treating symptoms as proof.
diseaseenvironmentalfish health
Disease / condition profile10 min
Low dissolved oxygen (hypoxia)
Identify the pattern, look-alikes and diagnostic steps for low dissolved oxygen (hypoxia) without treating symptoms as proof.
diseaseenvironmentalfish health
Disease / condition profile10 min
Carbon dioxide toxicity
Identify the pattern, look-alikes and diagnostic steps for carbon dioxide toxicity without treating symptoms as proof.
diseaseenvironmentalfish health
Disease / condition profile10 min
Hydrogen sulfide toxicity
Identify the pattern, look-alikes and diagnostic steps for hydrogen sulfide toxicity without treating symptoms as proof.
diseaseenvironmentalfish health
Disease / condition profile10 min
Copper toxicity
Identify the pattern, look-alikes and diagnostic steps for copper toxicity without treating symptoms as proof.
diseaseenvironmentalfish health
Disease / condition profile10 min
Zinc and mixed heavy-metal toxicity
Identify the pattern, look-alikes and diagnostic steps for zinc and mixed heavy-metal toxicity without treating symptoms as proof.
diseaseenvironmentalfish health
Disease / condition profile10 min
Acute pH shock and acidosis
Identify the pattern, look-alikes and diagnostic steps for acute ph shock and acidosis without treating symptoms as proof.
diseaseenvironmentalfish health
Disease / condition profile10 min
High-pH injury and alkalosis
Identify the pattern, look-alikes and diagnostic steps for high-ph injury and alkalosis without treating symptoms as proof.
diseaseenvironmentalfish health
Disease / condition profile10 min
Acute temperature shock
Identify the pattern, look-alikes and diagnostic steps for acute temperature shock without treating symptoms as proof.
diseaseenvironmentalfish health
Disease / condition profile10 min
Heat stress and hyperthermia
Identify the pattern, look-alikes and diagnostic steps for heat stress and hyperthermia without treating symptoms as proof.
diseaseenvironmentalfish health
Disease / condition profile10 min
Cold stress and hypothermia
Identify the pattern, look-alikes and diagnostic steps for cold stress and hypothermia without treating symptoms as proof.
diseaseenvironmentalfish health
Disease / condition profile10 min
Salinity and osmotic shock
Identify the pattern, look-alikes and diagnostic steps for salinity and osmotic shock without treating symptoms as proof.
diseaseenvironmentalfish health
Disease / condition profile10 min
Mineral deficiency and very soft-water osmotic stress
Identify the pattern, look-alikes and diagnostic steps for mineral deficiency and very soft-water osmotic stress without treating symptoms as proof.
diseaseenvironmentalfish health
Disease / condition profile10 min
Old tank syndrome
Identify the pattern, look-alikes and diagnostic steps for old tank syndrome without treating symptoms as proof.
diseaseenvironmentalfish health
Disease / condition profile10 min
New tank syndrome
Identify the pattern, look-alikes and diagnostic steps for new tank syndrome without treating symptoms as proof.
diseaseenvironmentalfish health
Disease / condition profile10 min
Thyroid hyperplasia (goitre)
Identify the pattern, look-alikes and diagnostic steps for thyroid hyperplasia (goitre) without treating symptoms as proof.
diseasenutritionfish health
Disease / condition profile10 min
Vitamin C deficiency (broken-back disease)
Identify the pattern, look-alikes and diagnostic steps for vitamin c deficiency (broken-back disease) without treating symptoms as proof.
diseasenutritionfish health
Disease / condition profile10 min
Hepatic lipidosis (fatty liver)
Identify the pattern, look-alikes and diagnostic steps for hepatic lipidosis (fatty liver) without treating symptoms as proof.
diseasenutritionfish health
Disease / condition profile10 min
Aflatoxin feed toxicosis
Identify the pattern, look-alikes and diagnostic steps for aflatoxin feed toxicosis without treating symptoms as proof.
diseasenutritionfish health
Disease / condition profile10 min
Rancid-feed and oxidised-fat disease
Identify the pattern, look-alikes and diagnostic steps for rancid-feed and oxidised-fat disease without treating symptoms as proof.
diseasenutritionfish health
Disease / condition profile10 min
Starvation and chronic malnutrition
Identify the pattern, look-alikes and diagnostic steps for starvation and chronic malnutrition without treating symptoms as proof.
diseasenutritionfish health
Disease / condition profile10 min
Obesity and chronic overfeeding
Identify the pattern, look-alikes and diagnostic steps for obesity and chronic overfeeding without treating symptoms as proof.
diseasenutritionfish health
Disease / condition profile10 min
Egg binding and dystocia
Identify the pattern, look-alikes and diagnostic steps for egg binding and dystocia without treating symptoms as proof.
diseasenutritionfish health
Disease / condition profile10 min
Intestinal impaction
Identify the pattern, look-alikes and diagnostic steps for intestinal impaction without treating symptoms as proof.
diseasenutritionfish health
Disease / condition profile10 min
Barotrauma and decompression injury
Identify the pattern, look-alikes and diagnostic steps for barotrauma and decompression injury without treating symptoms as proof.
diseaseenvironmentalfish health
Disease / condition profile10 min
Stray-voltage and electrical injury
Identify the pattern, look-alikes and diagnostic steps for stray-voltage and electrical injury without treating symptoms as proof.
diseaseenvironmentalfish health
Disease / condition profile10 min
Mechanical trauma and collision injury
Identify the pattern, look-alikes and diagnostic steps for mechanical trauma and collision injury without treating symptoms as proof.
diseaseenvironmentalfish health
Disease / condition profile10 min
Amoebic gill disease (Neoparamoeba perurans)
Identify the pattern, look-alikes and diagnostic steps for amoebic gill disease (neoparamoeba perurans) without treating symptoms as proof.
diseaseamoebicfish health
Disease / condition profile10 min
Apiosoma infestation
Identify the pattern, look-alikes and diagnostic steps for apiosoma infestation without treating symptoms as proof.
diseaseparasitefish health
Disease / condition profile10 min
Ambiphrya infestation
Identify the pattern, look-alikes and diagnostic steps for ambiphrya infestation without treating symptoms as proof.
diseaseparasitefish health
Disease / condition profile10 min
Miamiensis avidus scuticociliatosis
Identify the pattern, look-alikes and diagnostic steps for miamiensis avidus scuticociliatosis without treating symptoms as proof.
diseaseparasitefish health
Disease / condition profile10 min
Philasterides dicentrarchi scuticociliatosis
Identify the pattern, look-alikes and diagnostic steps for philasterides dicentrarchi scuticociliatosis without treating symptoms as proof.
diseaseparasitefish health
Disease / condition profile10 min
Fish trypanosomiasis
Identify the pattern, look-alikes and diagnostic steps for fish trypanosomiasis without treating symptoms as proof.
diseaseparasitefish health
Disease / condition profile10 min
Centrocestus formosanus gill trematodiasis
Identify the pattern, look-alikes and diagnostic steps for centrocestus formosanus gill trematodiasis without treating symptoms as proof.
diseaseparasitefish health
Disease / condition profile10 min
Bolbophorus trematodiasis
Identify the pattern, look-alikes and diagnostic steps for bolbophorus trematodiasis without treating symptoms as proof.
diseaseparasitefish health
Disease / condition profile10 min
Ligula intestinalis plerocercoid infection
Identify the pattern, look-alikes and diagnostic steps for ligula intestinalis plerocercoid infection without treating symptoms as proof.
diseaseparasitefish health
Disease / condition profile10 min
Anisakid larval nematode infection
Identify the pattern, look-alikes and diagnostic steps for anisakid larval nematode infection without treating symptoms as proof.
diseaseparasitefish health
Disease / condition profile10 min
Cymothoid isopod infestation
Identify the pattern, look-alikes and diagnostic steps for cymothoid isopod infestation without treating symptoms as proof.
diseaseparasitefish health
Disease / condition profile10 min
Gnathiid isopod infestation
Identify the pattern, look-alikes and diagnostic steps for gnathiid isopod infestation without treating symptoms as proof.
diseaseparasitefish health
Disease / condition profile10 min
Benedenia seriolae infection
Identify the pattern, look-alikes and diagnostic steps for benedenia seriolae infection without treating symptoms as proof.
diseaseparasitefish health
Disease / condition profile10 min
Hoferellus carassii kidney enlargement disease
Identify the pattern, look-alikes and diagnostic steps for hoferellus carassii kidney enlargement disease without treating symptoms as proof.
diseasemyxozoanfish health
Disease / condition profile10 min
Thelohanellus hovorkai infection
Identify the pattern, look-alikes and diagnostic steps for thelohanellus hovorkai infection without treating symptoms as proof.
diseasemyxozoanfish health
Disease / condition profile10 min
Myxobolus koi infection
Identify the pattern, look-alikes and diagnostic steps for myxobolus koi infection without treating symptoms as proof.
diseasemyxozoanfish health
Disease / condition profile10 min
Aeromonas veronii infection
Identify the pattern, look-alikes and diagnostic steps for aeromonas veronii infection without treating symptoms as proof.
diseasebacterialfish health
Disease / condition profile10 min
Vibrio harveyi infection
Identify the pattern, look-alikes and diagnostic steps for vibrio harveyi infection without treating symptoms as proof.
diseasebacterialfish health
Disease / condition profile10 min
Streptococcus agalactiae infection
Identify the pattern, look-alikes and diagnostic steps for streptococcus agalactiae infection without treating symptoms as proof.
diseasebacterialfish health
Disease / condition profile10 min
Grass carp haemorrhagic disease (grass carp reovirus)
Identify the pattern, look-alikes and diagnostic steps for grass carp haemorrhagic disease (grass carp reovirus) without treating symptoms as proof.
diseasegcrvfish health
Symptom guide8 min
Why are my fish gasping after a water change?
The timing makes the replacement water, conditioner dose, temperature and gas exchange the first things to check.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish flashing after a water change?
When flashing starts within minutes to hours of a water change, test the new water and tank chemistry before assuming parasites.
symptomdifferentialfish health
Symptom guide8 min
Why did fish die soon after a water change?
Reconstruct exactly what changed: source water, conditioner, temperature, volume, substrate disturbance and equipment state.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish sick after I cleaned the filter?
Test ammonia and nitrite and confirm the filter is actually moving water and media was not exposed to untreated tap water.
symptomdifferentialfish health
Symptom guide8 min
Why did fish die after I cleaned the filter?
A filter-cleaning link points first to ammonia, nitrite, oxygen and chemical exposure rather than a new contagious disease.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish gasping after a power outage?
Duration of the outage, stocking density and whether filtration/aeration restarted normally are key clues.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish sick after the heater failed?
Check the actual minimum/maximum water temperature rather than relying only on the heater setting.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish sick after the tank overheated?
Temperature and oxygen must be interpreted together because warm water holds less oxygen and can increase ammonia toxicity.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish sick after CO2 injection?
Turn attention to CO2 delivery, pH trend and fish respiratory behaviour before adding medication.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish sick after I added salt?
Measure salinity/conductivity and verify the actual amount added and total water volume.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish sick after adding water conditioner?
Verify the exact product, dose and source-water chlorine/chloramine rather than assuming all conditioners behave the same.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish sick after moving the aquarium?
Moving can create several simultaneous stresses, so compare old versus new water and confirm filter function.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish sick after transport?
Separate transport stress from contagious disease by checking the timeline and whether only transported fish are affected.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish sick after a very large feeding?
Test water and check whether uneaten food remains; a shared response in many fish points toward the system rather than one fish’s gut.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish sick after eating live food?
Record the live-food source and whether only fish that ate it are affected; preserve a sample if a veterinarian may investigate.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish sick after adding new decoration?
Remove suspicion from infection until the material, coating and water chemistry have been checked.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish sick after spray cleaner or aerosol was used nearby?
The exposure timing and whether the aquarium was uncovered are key; ordinary aquarium tests may not detect the contaminant.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish sick after a metal object was put in the tank?
Identify the metal and test water where possible; toxicity changes with hardness, alkalinity and pH.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish sick after I disturbed the substrate?
A close timing link to deep substrate disturbance makes environmental causes more likely than a new infection.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish sick after a deep gravel clean?
Check water immediately and compare how much substrate/filter media was disturbed in the same session.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish gills red and inflamed?
Redness alone cannot identify the cause; combine water tests with gill movement and wet-mount findings if disease persists.
symptomdifferentialfish health
Symptom guide8 min
Why is stringy mucus hanging from my fish gills?
Confirm that the material originates from gill tissue rather than food/debris and test ammonia, nitrite and chlorine.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish rubbing mostly around its gills?
Gill-focused rubbing increases suspicion of a gill problem but does not distinguish parasite from chemical irritation.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish mouth bleeding?
Look for a clear injury point and compare whether other fish have mouth lesions or systemic haemorrhage.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish jaw swollen?
A one-sided firm swelling suggests a different differential from diffuse soft swelling in several fish.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish lips turning white?
Check whether the white area is smooth pigment, eroded tissue or a raised growth and compare progression over 24–48 hours.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish nostrils red or swollen?
Examine both sides and review recent netting, transport and aggression before assuming systemic disease.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish head swollen?
Location and texture matter: diffuse symmetrical swelling differs from a single firm mass.
symptomdifferentialfish health
Symptom guide8 min
Why do my fish eyes look sunken?
Compare body condition and both eyes; sunken eyes in a very thin fish suggests a different process from a local eye injury.
symptomdifferentialfish health
Symptom guide8 min
Why is one fish eye red or inflamed?
One-eye disease often points toward local trauma or infection, while both eyes in many fish raises environmental/systemic causes.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish body look milky or cloudy?
View under neutral lighting and check whether the haze wipes/changes with angle or is true skin/mucus change.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish ulcer have a white edge?
A white rim is not enough to identify fungus; look for tissue loss, fuzzy growth, haemorrhage and progression.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish developing several skin ulcers?
Multiple expanding ulcers shift concern toward systemic or transmissible disease rather than one collision.
symptomdifferentialfish health
Symptom guide8 min
Why are the fin rays on my fish exposed?
Check whether the damage is progressing between photos and whether other fish are nipping.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish fins curling or deforming?
New deformity in an adult has a different differential from a stable juvenile or breed-related shape.
symptomdifferentialfish health
Symptom guide8 min
Why is the webbing between my fish fin rays disappearing?
Smooth missing webbing after aggression differs from progressively necrotic or reddened tissue.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish belly feel or look firm and hard?
Do not squeeze the fish; imaging is often safer and more informative than trying to diagnose firmness by touch.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish bloat immediately after eating?
A swelling that resolves between meals differs from progressive enlargement unrelated to feeding.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish not passing faeces?
First confirm the fish is actually eating; absence of faeces in a fasting fish is not the same as obstruction.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish have long white stringy faeces?
White stringy material is not proof of internal parasites; appetite, body condition and microscopy matter.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish faeces unusually pale or white?
Compare with the food colour and whether the fish is eating normally before attributing pale faeces to a pathogen.
symptomdifferentialfish health
Symptom guide8 min
Why do my fish faeces float?
Floating faeces by itself is weak evidence; pair it with appetite, weight trend and stool appearance.
symptomdifferentialfish health
Symptom guide8 min
Why do my fish faeces look oily or leave a film?
Review the diet and food freshness and check whether an oily film also appears when food is added directly to water.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish swimming head-up with its tail down?
Observe whether the posture changes when the fish stops swimming and whether the abdomen is enlarged.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish lying on its side but still breathing?
Check water and temperature immediately before assuming swim-bladder disease.
symptomdifferentialfish health
Symptom guide8 min
Why does my fish rest on the bottom after feeding?
Compare with the species’ normal behaviour and whether the sign occurs only after large meals.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish suddenly jumping out of the water?
If several fish jump or dart at once, environmental irritation moves higher than one fish being startled.
symptomdifferentialfish health
Symptom guide8 min
Why is my fish hiding beside the heater?
Measure temperature at several tank locations and compare heater operation with species requirements.
symptomdifferentialfish health
Symptom guide8 min
Why are my fish clustering around the air stone?
When many fish cluster at the aeration source, test oxygen-related causes before calling it normal behaviour.
symptomdifferentialfish health
Symptom guide8 min
Why are the largest fish piping at the surface first?
Large fish becoming distressed before small fish is a classic clue for declining dissolved oxygen, especially overnight or in warm water.
symptomdifferentialfish health
Disease / condition profile10 min
Vitamin E deficiency and nutritional steatitis
Identify the pattern, look-alikes and diagnostic steps for vitamin e deficiency and nutritional steatitis without treating symptoms as proof.
nutritionaldiseasefish health
Disease / condition profile10 min
Riboflavin (vitamin B2) deficiency
Identify the pattern, look-alikes and diagnostic steps for riboflavin (vitamin b2) deficiency without treating symptoms as proof.
nutritionaldiseasefish health
Disease / condition profile10 min
Pyridoxine (vitamin B6) deficiency
Identify the pattern, look-alikes and diagnostic steps for pyridoxine (vitamin b6) deficiency without treating symptoms as proof.
nutritionaldiseasefish health
Disease / condition profile10 min
Niacin (vitamin B3) deficiency
Identify the pattern, look-alikes and diagnostic steps for niacin (vitamin b3) deficiency without treating symptoms as proof.
nutritionaldiseasefish health
Disease / condition profile10 min
Pantothenic acid (vitamin B5) deficiency
Identify the pattern, look-alikes and diagnostic steps for pantothenic acid (vitamin b5) deficiency without treating symptoms as proof.
nutritionaldiseasefish health
Disease / condition profile10 min
Biotin deficiency
Identify the pattern, look-alikes and diagnostic steps for biotin deficiency without treating symptoms as proof.
nutritionaldiseasefish health
Disease / condition profile10 min
Folate (vitamin B9) deficiency
Identify the pattern, look-alikes and diagnostic steps for folate (vitamin b9) deficiency without treating symptoms as proof.
nutritionaldiseasefish health
Disease / condition profile10 min
Vitamin B12 deficiency
Identify the pattern, look-alikes and diagnostic steps for vitamin b12 deficiency without treating symptoms as proof.
nutritionaldiseasefish health
Disease / condition profile10 min
Choline deficiency
Identify the pattern, look-alikes and diagnostic steps for choline deficiency without treating symptoms as proof.
nutritionaldiseasefish health
Disease / condition profile10 min
Iron deficiency anaemia
Identify the pattern, look-alikes and diagnostic steps for iron deficiency anaemia without treating symptoms as proof.
nutritionaldiseasefish health
Disease / condition profile10 min
Ozone toxicity
Identify the pattern, look-alikes and diagnostic steps for ozone toxicity without treating symptoms as proof.
environmentaldiseasefish health
Disease / condition profile10 min
Detergent and surfactant toxicity
Identify the pattern, look-alikes and diagnostic steps for detergent and surfactant toxicity without treating symptoms as proof.
environmentaldiseasefish health
Disease / condition profile10 min
Cyanobacterial toxin poisoning
Identify the pattern, look-alikes and diagnostic steps for cyanobacterial toxin poisoning without treating symptoms as proof.
environmentaldiseasefish health
Disease / condition profile10 min
Formalin toxicity
Identify the pattern, look-alikes and diagnostic steps for formalin toxicity without treating symptoms as proof.
treatment reactiondiseasefish health
Disease / condition profile10 min
Hydrogen peroxide toxicity
Identify the pattern, look-alikes and diagnostic steps for hydrogen peroxide toxicity without treating symptoms as proof.
treatment reactiondiseasefish health
Disease / condition profile10 min
Algaecide toxicity
Identify the pattern, look-alikes and diagnostic steps for algaecide toxicity without treating symptoms as proof.
treatment reactiondiseasefish health
Disease / condition profile10 min
Anaesthetic and sedative overdose
Identify the pattern, look-alikes and diagnostic steps for anaesthetic and sedative overdose without treating symptoms as proof.
treatment reactiondiseasefish health
Disease / condition profile10 min
Winter ulcer disease (Moritella viscosa)
Identify the pattern, look-alikes and diagnostic steps for winter ulcer disease (moritella viscosa) without treating symptoms as proof.
bacterialdiseasefish health
Disease / condition profile10 min
Vibrio anguillarum infection
Identify the pattern, look-alikes and diagnostic steps for vibrio anguillarum infection without treating symptoms as proof.
bacterialdiseasefish health
Disease / condition profile10 min
Streptococcus parauberis infection
Identify the pattern, look-alikes and diagnostic steps for streptococcus parauberis infection without treating symptoms as proof.
bacterialdiseasefish health
Disease / condition profile10 min
Streptococcus dysgalactiae infection
Identify the pattern, look-alikes and diagnostic steps for streptococcus dysgalactiae infection without treating symptoms as proof.
bacterialdiseasefish health
Disease / condition profile10 min
Weissella ceti infection
Identify the pattern, look-alikes and diagnostic steps for weissella ceti infection without treating symptoms as proof.
bacterialdiseasefish health
Disease / condition profile10 min
Chryseobacterium infection
Identify the pattern, look-alikes and diagnostic steps for chryseobacterium infection without treating symptoms as proof.
bacterialdiseasefish health
Disease / condition profile10 min
Shewanella putrefaciens infection
Identify the pattern, look-alikes and diagnostic steps for shewanella putrefaciens infection without treating symptoms as proof.
bacterialdiseasefish health
Disease / condition profile10 min
Aeromonas hydrophila infection
Identify the pattern, look-alikes and diagnostic steps for aeromonas hydrophila infection without treating symptoms as proof.
bacterialdiseasefish health
Disease / condition profile10 min
Flavobacterium johnsoniae infection
Identify the pattern, look-alikes and diagnostic steps for flavobacterium johnsoniae infection without treating symptoms as proof.
bacterialdiseasefish health
Disease / condition profile10 min
Salmincola copepod infestation
Identify the pattern, look-alikes and diagnostic steps for salmincola copepod infestation without treating symptoms as proof.
parasiticdiseasefish health
Disease / condition profile10 min
Lamproglena gill copepod infestation
Identify the pattern, look-alikes and diagnostic steps for lamproglena gill copepod infestation without treating symptoms as proof.
parasiticdiseasefish health
Disease / condition profile10 min
Lernaeocera branchialis infestation
Identify the pattern, look-alikes and diagnostic steps for lernaeocera branchialis infestation without treating symptoms as proof.
parasiticdiseasefish health
Disease / condition profile10 min
Pennella copepod infestation
Identify the pattern, look-alikes and diagnostic steps for pennella copepod infestation without treating symptoms as proof.
parasiticdiseasefish health
Disease / condition profile10 min
Posthodiplostomum white-grub disease
Identify the pattern, look-alikes and diagnostic steps for posthodiplostomum white-grub disease without treating symptoms as proof.
parasiticdiseasefish health
Disease / condition profile10 min
Cryptosporidium molnari infection
Identify the pattern, look-alikes and diagnostic steps for cryptosporidium molnari infection without treating symptoms as proof.
parasiticdiseasefish health
Disease / condition profile10 min
Sphaerospora molnari infection
Identify the pattern, look-alikes and diagnostic steps for sphaerospora molnari infection without treating symptoms as proof.
myxozoandiseasefish health
Disease / condition profile10 min
Parvicapsula pseudobranchicola infection
Identify the pattern, look-alikes and diagnostic steps for parvicapsula pseudobranchicola infection without treating symptoms as proof.
myxozoandiseasefish health
Disease / condition profile10 min
Sphaerothecum destruens infection (rosette agent)
Identify the pattern, look-alikes and diagnostic steps for sphaerothecum destruens infection (rosette agent) without treating symptoms as proof.
mesomycetozoeandiseasefish health
Disease / condition profile10 min
Proliferative gill disease (hamburger gill disease)
Identify the pattern, look-alikes and diagnostic steps for proliferative gill disease (hamburger gill disease) without treating symptoms as proof.
myxozoandiseasefish health
Disease / condition profile10 min
Nephrocalcinosis
Identify the pattern, look-alikes and diagnostic steps for nephrocalcinosis without treating symptoms as proof.
organdiseasefish health
Disease / condition profile10 min
Renal failure and kidney dysfunction
Identify the pattern, look-alikes and diagnostic steps for renal failure and kidney dysfunction without treating symptoms as proof.
organdiseasefish health
Disease / condition profile10 min
Chronic hepatopathy and liver disease
Identify the pattern, look-alikes and diagnostic steps for chronic hepatopathy and liver disease without treating symptoms as proof.
organdiseasefish health
Disease / condition profile10 min
Swim bladder inflammation (aerocystitis)
Identify the pattern, look-alikes and diagnostic steps for swim bladder inflammation (aerocystitis) without treating symptoms as proof.
organdiseasefish health
Disease / condition profile10 min
Cataract and lens disease
Identify the pattern, look-alikes and diagnostic steps for cataract and lens disease without treating symptoms as proof.
eyediseasefish health
Disease / condition profile10 min
Corneal ulcer and keratitis
Identify the pattern, look-alikes and diagnostic steps for corneal ulcer and keratitis without treating symptoms as proof.
eyediseasefish health
Disease / condition profile10 min
Skeletal deformity, scoliosis and lordosis
Identify the pattern, look-alikes and diagnostic steps for skeletal deformity, scoliosis and lordosis without treating symptoms as proof.
developmentaldiseasefish health
Disease / condition profile10 min
Ovarian cyst and reproductive tract disorder
Identify the pattern, look-alikes and diagnostic steps for ovarian cyst and reproductive tract disorder without treating symptoms as proof.
reproductivediseasefish health
Disease / condition profile10 min
Magnesium deficiency
Identify the pattern, look-alikes and diagnostic steps for magnesium deficiency without treating symptoms as proof.
nutritionaldiseasefish health
Disease / condition profile10 min
Calcium deficiency and mineral imbalance
Identify the pattern, look-alikes and diagnostic steps for calcium deficiency and mineral imbalance without treating symptoms as proof.
nutritionaldiseasefish health
Disease / condition profile10 min
Selenium toxicity
Identify the pattern, look-alikes and diagnostic steps for selenium toxicity without treating symptoms as proof.
environmentaldiseasefish health
Disease / condition profile10 min
Mercury toxicity
Identify the pattern, look-alikes and diagnostic steps for mercury toxicity without treating symptoms as proof.
environmentaldiseasefish health
Disease / condition profile10 min
Cadmium toxicity
Identify the pattern, look-alikes and diagnostic steps for cadmium toxicity without treating symptoms as proof.
environmentaldiseasefish health
Disease / condition profile10 min
Lactococcus petauri infection
Identify the pattern, look-alikes and diagnostic steps for lactococcus petauri infection without treating symptoms as proof.
bacterialdiseasefish health
Symptom differential10 min
Why is only one fish breathing fast?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why is my fish breathing fast after feeding?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why is my fish breathing fast after medication?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why are my fish gasping early in the morning?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why do my fish improve when I add more aeration?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why do my fish improve after a water change and then relapse?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why do my fish symptoms get worse overnight?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why do my fish show symptoms after the lights come on?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why did my fish suddenly stop eating?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why is my fish refusing food but otherwise acting normal?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why is one fish isolating itself from the school?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why is my fish hiding all day?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why is my fish staying at the surface without gasping?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why is my fish resting on plants or leaves?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why is my fish hanging near the filter intake?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why are only my bottom-dwelling fish getting sick?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why are only the largest fish affected?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why are only the new fish getting sick?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why is only one fish sick when the rest look normal?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why did my fish recover during treatment and then relapse?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why did fish symptoms return days after treatment ended?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why are my fish sick after adding new plants?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why are my fish sick after adding plant fertiliser?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why are my fish sick after using an algaecide?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why are my fish sick after hydrogen peroxide treatment?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why are my fish sick after formalin treatment?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why are my fish sick after copper medication?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why are my fish sick after antibiotic treatment?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why are my fish sick after anti-parasite treatment?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why are my fish sick after a salt bath?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why are my fish sick after acclimation?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why are my fish sick after eating frozen food?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why are my fish sick after eating thawed food left out too long?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why is my fish tail split without obvious fin rot?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why is one of my fish fins not moving normally?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why is my fish shedding slime or mucus in sheets?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why can I see red lines or veins under my fish skin?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why did black marks appear after an ammonia problem?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why did white patches appear after treatment?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why is only one gill swollen?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why do my fish gill tips look curled or distorted?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why did my fish eye turn cloudy after an injury?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why are both of my fish eyes becoming cloudy inside the lens?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why is my fish bloated without raised scales?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why is my fish abdomen swelling rapidly over a few hours?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why did my fish spine suddenly become bent?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why has my fish had a bent spine since it was young?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why are my fish fry developing bent spines?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why can’t my fish fry inflate their swim bladder?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Symptom differential10 min
Why is my fish shimmying or rocking in place?
Use timing, water tests and related signs to investigate this symptom without treating it as a diagnosis.
symptomdifferentialfish health
Disease profile10 min
Salmonid early mortality syndrome (M74)
Identify the documented basis, important look-alikes and diagnostic steps for salmonid early mortality syndrome (m74) without treating symptoms as proof.
diseasedevelopmentaldiagnosis-first
Disease profile10 min
Swim-bladder non-inflation syndrome
Identify the documented basis, important look-alikes and diagnostic steps for swim-bladder non-inflation syndrome without treating symptoms as proof.
diseasedevelopmentaldiagnosis-first
Disease profile10 min
Swim-bladder hyperinflation syndrome
Identify the documented basis, important look-alikes and diagnostic steps for swim-bladder hyperinflation syndrome without treating symptoms as proof.
diseasedevelopmentaldiagnosis-first
Disease profile10 min
Oophoritis / ovarian inflammation
Identify the documented basis, important look-alikes and diagnostic steps for oophoritis / ovarian inflammation without treating symptoms as proof.
diseasereproductivediagnosis-first
Disease profile10 min
Orchitis / testicular inflammation
Identify the documented basis, important look-alikes and diagnostic steps for orchitis / testicular inflammation without treating symptoms as proof.
diseasereproductivediagnosis-first
Disease profile10 min
Piscine erysipelosis (Erysipelothrix piscisicarius)
Identify the documented basis, important look-alikes and diagnostic steps for piscine erysipelosis (erysipelothrix piscisicarius) without treating symptoms as proof.
diseasebacterialdiagnosis-first
Disease profile10 min
Streptococcus uberis infection
Identify the documented basis, important look-alikes and diagnostic steps for streptococcus uberis infection without treating symptoms as proof.
diseasebacterialdiagnosis-first
Disease profile10 min
Pseudomonas anguilliseptica infection
Identify the documented basis, important look-alikes and diagnostic steps for pseudomonas anguilliseptica infection without treating symptoms as proof.
diseasebacterialdiagnosis-first
Disease profile10 min
Aeromonas sobria infection
Identify the documented basis, important look-alikes and diagnostic steps for aeromonas sobria infection without treating symptoms as proof.
diseasebacterialdiagnosis-first
Disease profile10 min
Aeromonas schubertii infection
Identify the documented basis, important look-alikes and diagnostic steps for aeromonas schubertii infection without treating symptoms as proof.
diseasebacterialdiagnosis-first
Disease profile10 min
Aeromonas dhakensis infection
Identify the documented basis, important look-alikes and diagnostic steps for aeromonas dhakensis infection without treating symptoms as proof.
diseasebacterialdiagnosis-first
Disease profile10 min
Vibrio alginolyticus infection
Identify the documented basis, important look-alikes and diagnostic steps for vibrio alginolyticus infection without treating symptoms as proof.
diseasebacterialdiagnosis-first
Disease profile10 min
Vibrio vulnificus infection in fish
Identify the documented basis, important look-alikes and diagnostic steps for vibrio vulnificus infection in fish without treating symptoms as proof.
diseasebacterialdiagnosis-first
Disease profile10 min
Vibrio parahaemolyticus infection in fish
Identify the documented basis, important look-alikes and diagnostic steps for vibrio parahaemolyticus infection in fish without treating symptoms as proof.
diseasebacterialdiagnosis-first
Disease profile10 min
Citrobacter freundii infection
Identify the documented basis, important look-alikes and diagnostic steps for citrobacter freundii infection without treating symptoms as proof.
diseasebacterialdiagnosis-first
Disease profile10 min
Plesiomonas shigelloides infection
Identify the documented basis, important look-alikes and diagnostic steps for plesiomonas shigelloides infection without treating symptoms as proof.
diseasebacterialdiagnosis-first
Disease profile10 min
Serratia marcescens infection
Identify the documented basis, important look-alikes and diagnostic steps for serratia marcescens infection without treating symptoms as proof.
diseasebacterialdiagnosis-first
Disease profile10 min
Vagococcus salmoninarum infection
Identify the documented basis, important look-alikes and diagnostic steps for vagococcus salmoninarum infection without treating symptoms as proof.
diseasebacterialdiagnosis-first
Disease profile10 min
Carnobacterium maltaromaticum infection
Identify the documented basis, important look-alikes and diagnostic steps for carnobacterium maltaromaticum infection without treating symptoms as proof.
diseasebacterialdiagnosis-first
Disease profile10 min
Streptococcus phocae infection
Identify the documented basis, important look-alikes and diagnostic steps for streptococcus phocae infection without treating symptoms as proof.
diseasebacterialdiagnosis-first
Disease profile10 min
Edwardsiella anguillarum infection
Identify the documented basis, important look-alikes and diagnostic steps for edwardsiella anguillarum infection without treating symptoms as proof.
diseasebacterialdiagnosis-first
Disease profile10 min
Hafnia alvei infection
Identify the documented basis, important look-alikes and diagnostic steps for hafnia alvei infection without treating symptoms as proof.
diseasebacterialdiagnosis-first
Disease profile10 min
Anguillid herpesvirus 1 disease
Identify the documented basis, important look-alikes and diagnostic steps for anguillid herpesvirus 1 disease without treating symptoms as proof.
diseaseviraldiagnosis-first
Disease profile10 min
Oncorhynchus masou virus disease
Identify the documented basis, important look-alikes and diagnostic steps for oncorhynchus masou virus disease without treating symptoms as proof.
diseaseviraldiagnosis-first
Disease profile10 min
Tilapia parvovirus disease
Identify the documented basis, important look-alikes and diagnostic steps for tilapia parvovirus disease without treating symptoms as proof.
diseaseviraldiagnosis-first
Disease profile10 min
Eel virus European X infection
Identify the documented basis, important look-alikes and diagnostic steps for eel virus european x infection without treating symptoms as proof.
diseaseviraldiagnosis-first
Disease profile10 min
Snakehead rhabdovirus infection
Identify the documented basis, important look-alikes and diagnostic steps for snakehead rhabdovirus infection without treating symptoms as proof.
diseaseviraldiagnosis-first
Disease profile10 min
Sanguinicola blood-fluke disease
Identify the documented basis, important look-alikes and diagnostic steps for sanguinicola blood-fluke disease without treating symptoms as proof.
diseaseparasiticdiagnosis-first
Disease profile10 min
Cardicola blood-fluke disease
Identify the documented basis, important look-alikes and diagnostic steps for cardicola blood-fluke disease without treating symptoms as proof.
diseaseparasiticdiagnosis-first
Disease profile10 min
Paradeontacylix blood-fluke disease
Identify the documented basis, important look-alikes and diagnostic steps for paradeontacylix blood-fluke disease without treating symptoms as proof.
diseaseparasiticdiagnosis-first
Disease profile10 min
Proteocephalus tapeworm infection
Identify the documented basis, important look-alikes and diagnostic steps for proteocephalus tapeworm infection without treating symptoms as proof.
diseaseparasiticdiagnosis-first
Disease profile10 min
Caryophyllaeus tapeworm infection
Identify the documented basis, important look-alikes and diagnostic steps for caryophyllaeus tapeworm infection without treating symptoms as proof.
diseaseparasiticdiagnosis-first
Disease profile10 min
Rhabdochona nematode infection
Identify the documented basis, important look-alikes and diagnostic steps for rhabdochona nematode infection without treating symptoms as proof.
diseaseparasiticdiagnosis-first
Disease profile10 min
Cystidicolid nematode infection
Identify the documented basis, important look-alikes and diagnostic steps for cystidicolid nematode infection without treating symptoms as proof.
diseaseparasiticdiagnosis-first
Disease profile10 min
Procamallanus nematode infection
Identify the documented basis, important look-alikes and diagnostic steps for procamallanus nematode infection without treating symptoms as proof.
diseaseparasiticdiagnosis-first
Disease profile10 min
Vitamin K deficiency
Identify the documented basis, important look-alikes and diagnostic steps for vitamin k deficiency without treating symptoms as proof.
diseasenutritionaldiagnosis-first
Disease profile10 min
Zinc deficiency
Identify the documented basis, important look-alikes and diagnostic steps for zinc deficiency without treating symptoms as proof.
diseasenutritionaldiagnosis-first
Disease profile10 min
Manganese deficiency
Identify the documented basis, important look-alikes and diagnostic steps for manganese deficiency without treating symptoms as proof.
diseasenutritionaldiagnosis-first
Disease profile10 min
Copper deficiency
Identify the documented basis, important look-alikes and diagnostic steps for copper deficiency without treating symptoms as proof.
diseasenutritionaldiagnosis-first
Disease profile10 min
Taurine deficiency
Identify the documented basis, important look-alikes and diagnostic steps for taurine deficiency without treating symptoms as proof.
diseasenutritionaldiagnosis-first
Disease profile10 min
Methionine deficiency
Identify the documented basis, important look-alikes and diagnostic steps for methionine deficiency without treating symptoms as proof.
diseasenutritionaldiagnosis-first
Disease profile10 min
Lysine deficiency
Identify the documented basis, important look-alikes and diagnostic steps for lysine deficiency without treating symptoms as proof.
diseasenutritionaldiagnosis-first
Disease profile10 min
Tryptophan deficiency
Identify the documented basis, important look-alikes and diagnostic steps for tryptophan deficiency without treating symptoms as proof.
diseasenutritionaldiagnosis-first
Disease profile10 min
Arginine deficiency
Identify the documented basis, important look-alikes and diagnostic steps for arginine deficiency without treating symptoms as proof.
diseasenutritionaldiagnosis-first
Disease profile10 min
Arsenic toxicity
Identify the documented basis, important look-alikes and diagnostic steps for arsenic toxicity without treating symptoms as proof.
diseaseenvironmentaldiagnosis-first
Disease profile10 min
Chromium toxicity
Identify the documented basis, important look-alikes and diagnostic steps for chromium toxicity without treating symptoms as proof.
diseaseenvironmentaldiagnosis-first
Disease profile10 min
Nickel toxicity
Identify the documented basis, important look-alikes and diagnostic steps for nickel toxicity without treating symptoms as proof.
diseaseenvironmentaldiagnosis-first
Disease profile10 min
Cyanide poisoning
Identify the documented basis, important look-alikes and diagnostic steps for cyanide poisoning without treating symptoms as proof.
diseaseenvironmentaldiagnosis-first
Disease profile10 min
Petroleum hydrocarbon toxicity
Identify the documented basis, important look-alikes and diagnostic steps for petroleum hydrocarbon toxicity without treating symptoms as proof.
diseaseenvironmentaldiagnosis-first
Disease profile10 min
Fluoride toxicity
Identify the documented basis, important look-alikes and diagnostic steps for fluoride toxicity without treating symptoms as proof.
diseaseenvironmentaldiagnosis-first
Symptom guide8 min
Why is my fish sick after spawning?
Use timing, water tests and related signs to investigate why is my fish sick after spawning without treating the symptom as a diagnosis.
symptomreproductivedifferential
Symptom guide8 min
Why is my fish breathing fast after spawning?
Use timing, water tests and related signs to investigate why is my fish breathing fast after spawning without treating the symptom as a diagnosis.
symptomreproductivedifferential
Symptom guide8 min
Why did my fish stop eating after spawning?
Use timing, water tests and related signs to investigate why did my fish stop eating after spawning without treating the symptom as a diagnosis.
symptomreproductivedifferential
Symptom guide8 min
Why is my fish’s vent swollen after spawning?
Use timing, water tests and related signs to investigate why is my fish’s vent swollen after spawning without treating the symptom as a diagnosis.
symptomreproductivedifferential
Symptom guide8 min
Why is my fish bleeding after spawning?
Use timing, water tests and related signs to investigate why is my fish bleeding after spawning without treating the symptom as a diagnosis.
symptomreproductivedifferential
Symptom guide8 min
Why is my fish losing balance after spawning?
Use timing, water tests and related signs to investigate why is my fish losing balance after spawning without treating the symptom as a diagnosis.
symptomreproductivedifferential
Symptom guide8 min
Why is my female fish still swollen after spawning?
Use timing, water tests and related signs to investigate why is my female fish still swollen after spawning without treating the symptom as a diagnosis.
symptomreproductivedifferential
Symptom guide8 min
Why does my fish still look full of eggs after a partial spawn?
Use timing, water tests and related signs to investigate why does my fish still look full of eggs after a partial spawn without treating the symptom as a diagnosis.
symptomreproductivedifferential
Symptom guide8 min
Why is my male fish injured after spawning?
Use timing, water tests and related signs to investigate why is my male fish injured after spawning without treating the symptom as a diagnosis.
symptomreproductivedifferential
Symptom guide8 min
Why is my female fish injured after spawning?
Use timing, water tests and related signs to investigate why is my female fish injured after spawning without treating the symptom as a diagnosis.
symptomreproductivedifferential
Symptom guide8 min
Why do my breeding fish keep getting sick after every spawn?
Use timing, water tests and related signs to investigate why do my breeding fish keep getting sick after every spawn without treating the symptom as a diagnosis.
symptomreproductivedifferential
Symptom guide8 min
Why did my fish stop releasing eggs mid-spawn?
Use timing, water tests and related signs to investigate why did my fish stop releasing eggs mid-spawn without treating the symptom as a diagnosis.
symptomreproductivedifferential
Symptom guide8 min
Why does my fish have tissue protruding after spawning?
Use timing, water tests and related signs to investigate why does my fish have tissue protruding after spawning without treating the symptom as a diagnosis.
symptomreproductivedifferential
Symptom guide8 min
Why does my fish have long stringy faeces after spawning?
Use timing, water tests and related signs to investigate why does my fish have long stringy faeces after spawning without treating the symptom as a diagnosis.
symptomreproductivedifferential
Symptom guide8 min
Why does my fish’s abdomen look firm or tight after spawning?
Use timing, water tests and related signs to investigate why does my fish’s abdomen look firm or tight after spawning without treating the symptom as a diagnosis.
symptomreproductivedifferential
Symptom guide8 min
Why are my fry dying within 24 hours of hatching?
Use timing, water tests and related signs to investigate why are my fry dying within 24 hours of hatching without treating the symptom as a diagnosis.
symptomfrydifferential
Symptom guide8 min
Why are my fry dying two to seven days after hatching?
Use timing, water tests and related signs to investigate why are my fry dying two to seven days after hatching without treating the symptom as a diagnosis.
symptomfrydifferential
Symptom guide8 min
Why are my fry dying as the yolk sac is absorbed?
Use timing, water tests and related signs to investigate why are my fry dying as the yolk sac is absorbed without treating the symptom as a diagnosis.
symptomfrydifferential
Symptom guide8 min
Why do my fry die after first feeding?
Use timing, water tests and related signs to investigate why do my fry die after first feeding without treating the symptom as a diagnosis.
symptomfrydifferential
Symptom guide8 min
Why won’t my fry start feeding?
Use timing, water tests and related signs to investigate why won’t my fry start feeding without treating the symptom as a diagnosis.
symptomfrydifferential
Symptom guide8 min
Why is my fry’s yolk sac swollen?
Use timing, water tests and related signs to investigate why is my fry’s yolk sac swollen without treating the symptom as a diagnosis.
symptomfrydifferential
Symptom guide8 min
Why is my fry’s yolk sac not shrinking?
Use timing, water tests and related signs to investigate why is my fry’s yolk sac not shrinking without treating the symptom as a diagnosis.
symptomfrydifferential
Symptom guide8 min
Why is my fry’s yolk sac red or haemorrhagic?
Use timing, water tests and related signs to investigate why is my fry’s yolk sac red or haemorrhagic without treating the symptom as a diagnosis.
symptomfrydifferential
Symptom guide8 min
Why is my fry’s yolk sac cloudy or opaque?
Use timing, water tests and related signs to investigate why is my fry’s yolk sac cloudy or opaque without treating the symptom as a diagnosis.
symptomfrydifferential
Symptom guide8 min
Why are my fry lying on the bottom after hatching?
Use timing, water tests and related signs to investigate why are my fry lying on the bottom after hatching without treating the symptom as a diagnosis.
symptomfrydifferential
Symptom guide8 min
Why are my fry stuck or floating at the surface after hatching?
Use timing, water tests and related signs to investigate why are my fry stuck or floating at the surface after hatching without treating the symptom as a diagnosis.
symptomfrydifferential
Symptom guide8 min
Why can’t my fry stay upright?
Use timing, water tests and related signs to investigate why can’t my fry stay upright without treating the symptom as a diagnosis.
symptomfrydifferential
Symptom guide8 min
Why do my fry sink after they start swimming?
Use timing, water tests and related signs to investigate why do my fry sink after they start swimming without treating the symptom as a diagnosis.
symptomfrydifferential
Symptom guide8 min
Why are my fry growing at very different rates?
Use timing, water tests and related signs to investigate why are my fry growing at very different rates without treating the symptom as a diagnosis.
symptomfrydifferential
Symptom guide8 min
Why are some fry stunted while the others grow?
Use timing, water tests and related signs to investigate why are some fry stunted while the others grow without treating the symptom as a diagnosis.
symptomfrydifferential
Symptom guide8 min
Why do my fry have swollen bellies?
Use timing, water tests and related signs to investigate why do my fry have swollen bellies without treating the symptom as a diagnosis.
symptomfrydifferential
Symptom guide8 min
Why are my fry suddenly dying in large numbers?
Use timing, water tests and related signs to investigate why are my fry suddenly dying in large numbers without treating the symptom as a diagnosis.
symptomfrydifferential
Symptom guide8 min
Why do fry die after moving to a grow-out tank?
Use timing, water tests and related signs to investigate why do fry die after moving to a grow-out tank without treating the symptom as a diagnosis.
symptomfrydifferential
Symptom guide8 min
Why are my fry’s gill covers short or deformed?
Use timing, water tests and related signs to investigate why are my fry’s gill covers short or deformed without treating the symptom as a diagnosis.
symptomfrydifferential
Symptom guide8 min
Why does fry growth stall after weaning onto a new food?
Use timing, water tests and related signs to investigate why does fry growth stall after weaning onto a new food without treating the symptom as a diagnosis.
symptomfrydifferential
Symptom guide8 min
Why do fish eggs turn white before hatching?
Use timing, water tests and related signs to investigate why do fish eggs turn white before hatching without treating the symptom as a diagnosis.
symptomeggdifferential
Symptom guide8 min
Why are fish embryos dying before hatching?
Use timing, water tests and related signs to investigate why are fish embryos dying before hatching without treating the symptom as a diagnosis.
symptomeggdifferential
Symptom guide8 min
Why do fry die after weaning from live food?
Use timing, water tests and related signs to investigate why do fry die after weaning from live food without treating the symptom as a diagnosis.
symptomfrydifferential
Symptom guide8 min
Why are my fish sick after a filter failure?
Use timing, water tests and related signs to investigate why are my fish sick after a filter failure without treating the symptom as a diagnosis.
symptomenvironmentdifferential
Symptom guide8 min
Why are my fish getting sick days after a power outage?
Use timing, water tests and related signs to investigate why are my fish getting sick days after a power outage without treating the symptom as a diagnosis.
symptomenvironmentdifferential
Symptom guide8 min
Why are my fish sick after a pH swing?
Use timing, water tests and related signs to investigate why are my fish sick after a ph swing without treating the symptom as a diagnosis.
symptomwater chemistrydifferential
Symptom guide8 min
Why are my fish sick after adding a buffer?
Use timing, water tests and related signs to investigate why are my fish sick after adding a buffer without treating the symptom as a diagnosis.
symptomwater chemistrydifferential
Symptom guide8 min
Why are my fish sick after remineralising the water?
Use timing, water tests and related signs to investigate why are my fish sick after remineralising the water without treating the symptom as a diagnosis.
symptomwater chemistrydifferential
Symptom guide8 min
Why are my fish sick after switching to RO water?
Use timing, water tests and related signs to investigate why are my fish sick after switching to ro water without treating the symptom as a diagnosis.
symptomwater chemistrydifferential
Symptom guide8 min
Why are my fish sick after changing food?
Use timing, water tests and related signs to investigate why are my fish sick after changing food without treating the symptom as a diagnosis.
symptomnutritiondifferential
Symptom guide8 min
Why is my fish sick after fasting?
Use timing, water tests and related signs to investigate why is my fish sick after fasting without treating the symptom as a diagnosis.
symptomnutritiondifferential
Symptom guide8 min
Why are my fish sick after adding many fish at once?
Use timing, water tests and related signs to investigate why are my fish sick after adding many fish at once without treating the symptom as a diagnosis.
symptomstockingdifferential
Symptom guide8 min
Why are my fish sick after replacing filter media?
Use timing, water tests and related signs to investigate why are my fish sick after replacing filter media without treating the symptom as a diagnosis.
symptomenvironmentdifferential
Symptom guide8 min
Why do my fish’s symptoms come and go?
Use timing, water tests and related signs to investigate why do my fish’s symptoms come and go without treating the symptom as a diagnosis.
symptomrecurringdifferential
Symptom guide8 min
Why does only one fish species keep getting sick in my tank?
Use timing, water tests and related signs to investigate why does only one fish species keep getting sick in my tank without treating the symptom as a diagnosis.
symptomhost patterndifferential
Disease profile10 min
Flavobacterium covae infection
Understand flavobacterium covae infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Flavobacterium davisii infection
Understand flavobacterium davisii infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Flavobacterium oreochromis infection
Understand flavobacterium oreochromis infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Tenacibaculum maritimum infection
Understand tenacibaculum maritimum infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Chryseobacterium indologenes infection
Understand chryseobacterium indologenes infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Shewanella algae infection
Understand shewanella algae infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Enterobacter cloacae infection
Understand enterobacter cloacae infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Aeromonas popoffii infection
Understand aeromonas popoffii infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Vibrio albensis infection
Understand vibrio albensis infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Klebsiella aerogenes infection in fish
Understand klebsiella aerogenes infection in fish, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Proteus penneri infection in fish
Understand proteus penneri infection in fish, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Proteus hauseri infection in fish
Understand proteus hauseri infection in fish, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Enterobacter cancerogenus infection in fish
Understand enterobacter cancerogenus infection in fish, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Enterobacter ludwigii infection in fish
Understand enterobacter ludwigii infection in fish, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Escherichia coli isolation and opportunistic infection in fish
Understand escherichia coli isolation and opportunistic infection in fish, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Kluyvera cryocrescens infection in fish
Understand kluyvera cryocrescens infection in fish, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Providencia vermicola infection in fish
Understand providencia vermicola infection in fish, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Citrobacter werkmanii infection in fish
Understand citrobacter werkmanii infection in fish, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Acinetobacter seifertii infection in fish
Understand acinetobacter seifertii infection in fish, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Edwardsiella tarda infection
Understand edwardsiella tarda infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Mycobacterium marinum infection
Understand mycobacterium marinum infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Mycobacterium fortuitum infection
Understand mycobacterium fortuitum infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Mycobacterium chelonae infection
Understand mycobacterium chelonae infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Nocardia seriolae infection
Understand nocardia seriolae infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Francisella orientalis infection
Understand francisella orientalis infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Yersinia ruckeri infection
Understand yersinia ruckeri infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Renibacterium salmoninarum infection
Understand renibacterium salmoninarum infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Aliivibrio salmonicida infection
Understand aliivibrio salmonicida infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Aeromonas salmonicida subsp. salmonicida infection
Understand aeromonas salmonicida subsp. salmonicida infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Aphanomyces invadans infection
Understand aphanomyces invadans infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Saprolegnia parasitica infection
Understand saprolegnia parasitica infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Pleistophora hyphessobryconis infection
Understand pleistophora hyphessobryconis infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Neobenedenia melleni infestation
Understand neobenedenia melleni infestation, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Ichthyobodo necator infection
Understand ichthyobodo necator infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Chilodonella piscicola infection
Understand chilodonella piscicola infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Uronema marinum infection
Understand uronema marinum infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Tetrahymena corlissi infection
Understand tetrahymena corlissi infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Trichodina heterodentata infestation
Understand trichodina heterodentata infestation, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Dactylogyrus intermedius gill-fluke infestation
Understand dactylogyrus intermedius gill-fluke infestation, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Dactylogyrus lamellatus gill-fluke infestation
Understand dactylogyrus lamellatus gill-fluke infestation, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Dactylogyrus minutus gill-fluke infestation
Understand dactylogyrus minutus gill-fluke infestation, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Gyrodactylus elegans infestation
Understand gyrodactylus elegans infestation, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Gyrodactylus katharineri infestation
Understand gyrodactylus katharineri infestation, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Cichlidogyrus halli gill-fluke infestation
Understand cichlidogyrus halli gill-fluke infestation, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Cichlidogyrus philander gill-fluke infestation
Understand cichlidogyrus philander gill-fluke infestation, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Myxobolus honghuensis infection
Understand myxobolus honghuensis infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Myxobolus acanthogobii infection
Understand myxobolus acanthogobii infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Henneguya ictaluri infection
Understand henneguya ictaluri infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Henneguya exilis infection
Understand henneguya exilis infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Disease profile10 min
Sphaerospora dykovae infection
Understand sphaerospora dykovae infection, important look-alikes, diagnostic limits and safer first-response priorities for aquarium and fish-health investigations.
diseasediagnosis-firstfish health
Symptom guide10 min
Why are my fish sick after a canister filter lost prime?
Use timing, water tests and related signs to investigate why are my fish sick after a canister filter lost prime? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after restarting a canister filter that held stagnant water?
Use timing, water tests and related signs to investigate why are my fish sick after restarting a canister filter that held stagnant water? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after the return pump stopped?
Use timing, water tests and related signs to investigate why are my fish sick after the return pump stopped? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after the aquarium overflow became blocked?
Use timing, water tests and related signs to investigate why are my fish sick after the aquarium overflow became blocked? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after a wavemaker stopped?
Use timing, water tests and related signs to investigate why are my fish sick after a wavemaker stopped? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after wavemaker flow was increased?
Use timing, water tests and related signs to investigate why are my fish sick after wavemaker flow was increased? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after a sponge filter became clogged?
Use timing, water tests and related signs to investigate why are my fish sick after a sponge filter became clogged? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after a prefilter became clogged?
Use timing, water tests and related signs to investigate why are my fish sick after a prefilter became clogged? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after the water level dropped below the filter intake?
Use timing, water tests and related signs to investigate why are my fish sick after the water level dropped below the filter intake? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after replacing a UV sterilizer bulb?
Use timing, water tests and related signs to investigate why are my fish sick after replacing a uv sterilizer bulb? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after adding zeolite?
Use timing, water tests and related signs to investigate why are my fish sick after adding zeolite? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after adding peat?
Use timing, water tests and related signs to investigate why are my fish sick after adding peat? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after adding botanical leaves or pods?
Use timing, water tests and related signs to investigate why are my fish sick after adding botanical leaves or pods? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after using blackwater extract?
Use timing, water tests and related signs to investigate why are my fish sick after using blackwater extract? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after adding a sludge-remover or enzyme product?
Use timing, water tests and related signs to investigate why are my fish sick after adding a sludge-remover or enzyme product? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after adding nitrate-remover resin?
Use timing, water tests and related signs to investigate why are my fish sick after adding nitrate-remover resin? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after adding ion-exchange resin?
Use timing, water tests and related signs to investigate why are my fish sick after adding ion-exchange resin? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after dosing iodine?
Use timing, water tests and related signs to investigate why are my fish sick after dosing iodine? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after dosing trace elements?
Use timing, water tests and related signs to investigate why are my fish sick after dosing trace elements? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after dosing iron?
Use timing, water tests and related signs to investigate why are my fish sick after dosing iron? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after dosing potassium?
Use timing, water tests and related signs to investigate why are my fish sick after dosing potassium? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after a CO2 solenoid stuck open?
Use timing, water tests and related signs to investigate why are my fish sick after a co2 solenoid stuck open? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after the aquarium lights were left on overnight?
Use timing, water tests and related signs to investigate why are my fish sick after the aquarium lights were left on overnight? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after the aquarium lights stayed off for several days?
Use timing, water tests and related signs to investigate why are my fish sick after the aquarium lights stayed off for several days? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after light intensity was increased?
Use timing, water tests and related signs to investigate why are my fish sick after light intensity was increased? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after the photoperiod was lengthened?
Use timing, water tests and related signs to investigate why are my fish sick after the photoperiod was lengthened? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after the aquarium was covered tightly?
Use timing, water tests and related signs to investigate why are my fish sick after the aquarium was covered tightly? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after using a new bucket or container?
Use timing, water tests and related signs to investigate why are my fish sick after using a new bucket or container? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after detergent residue got onto aquarium equipment?
Use timing, water tests and related signs to investigate why are my fish sick after detergent residue got onto aquarium equipment? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after using bleach-disinfected equipment?
Use timing, water tests and related signs to investigate why are my fish sick after using bleach-disinfected equipment? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after cleaning equipment with vinegar or citric acid?
Use timing, water tests and related signs to investigate why are my fish sick after cleaning equipment with vinegar or citric acid? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after hand sanitiser got into the aquarium?
Use timing, water tests and related signs to investigate why are my fish sick after hand sanitiser got into the aquarium? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after sunscreen or insect repellent contaminated the water?
Use timing, water tests and related signs to investigate why are my fish sick after sunscreen or insect repellent contaminated the water? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my pond fish sick after heavy rain?
Use timing, water tests and related signs to investigate why are my pond fish sick after heavy rain? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my pond fish sick after a pond turnover?
Use timing, water tests and related signs to investigate why are my pond fish sick after a pond turnover? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my pond fish sick after roof runoff entered the pond?
Use timing, water tests and related signs to investigate why are my pond fish sick after roof runoff entered the pond? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my pond fish sick after fertiliser runoff entered the pond?
Use timing, water tests and related signs to investigate why are my pond fish sick after fertiliser runoff entered the pond? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my pond fish sick after herbicide drift near the pond?
Use timing, water tests and related signs to investigate why are my pond fish sick after herbicide drift near the pond? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my pond fish sick after pool or spa water entered the pond?
Use timing, water tests and related signs to investigate why are my pond fish sick after pool or spa water entered the pond? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my pond fish sick after wildfire smoke or ash reached the pond?
Use timing, water tests and related signs to investigate why are my pond fish sick after wildfire smoke or ash reached the pond? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my marine fish sick after coral dip entered the tank?
Use timing, water tests and related signs to investigate why are my marine fish sick after coral dip entered the tank? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my marine fish sick after adding new coral frags?
Use timing, water tests and related signs to investigate why are my marine fish sick after adding new coral frags? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my marine fish sick after adding live rock?
Use timing, water tests and related signs to investigate why are my marine fish sick after adding live rock? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my marine fish sick after adding dry rock?
Use timing, water tests and related signs to investigate why are my marine fish sick after adding dry rock? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my marine fish sick after switching to a new salt-mix batch?
Use timing, water tests and related signs to investigate why are my marine fish sick after switching to a new salt-mix batch? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my marine fish sick after incompletely mixed saltwater was added?
Use timing, water tests and related signs to investigate why are my marine fish sick after incompletely mixed saltwater was added? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my marine fish sick after a refractometer was miscalibrated?
Use timing, water tests and related signs to investigate why are my marine fish sick after a refractometer was miscalibrated? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my marine fish sick after DI resin was exhausted?
Use timing, water tests and related signs to investigate why are my marine fish sick after di resin was exhausted? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after eating medicated food?
Use timing, water tests and related signs to investigate why are my fish sick after eating medicated food? without treating the event as a diagnosis.
symptomdifferentialfish health
Symptom guide10 min
Why are my fish sick after eating expired pellets?
Use timing, water tests and related signs to investigate why are my fish sick after eating expired pellets? without treating the event as a diagnosis.
symptomdifferentialfish health
Disease / condition profile11 min
Mycobacterium shottsii infection
Diagnosis-first profile covering mycobacterium shottsii infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthBacterial / mycobacterialDisease
Disease / condition profile11 min
Mycobacterium pseudoshottsii infection
Diagnosis-first profile covering mycobacterium pseudoshottsii infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthBacterial / mycobacterialDisease
Disease / condition profile11 min
Mycobacterium gordonae infection in fish
Diagnosis-first profile covering mycobacterium gordonae infection in fish, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthBacterial / mycobacterialDisease
Disease / condition profile11 min
Mycobacterium peregrinum infection in fish
Diagnosis-first profile covering mycobacterium peregrinum infection in fish, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthBacterial / mycobacterialDisease
Disease / condition profile11 min
Mycobacterium triplex infection in fish
Diagnosis-first profile covering mycobacterium triplex infection in fish, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthBacterial / mycobacterialDisease
Disease / condition profile11 min
Photobacterium damselae subsp. piscicida infection
Diagnosis-first profile covering photobacterium damselae subsp. piscicida infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthBacterial / marineDisease
Disease / condition profile11 min
Photobacterium damselae subsp. damselae infection
Diagnosis-first profile covering photobacterium damselae subsp. damselae infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthBacterial / marineDisease
Disease / condition profile11 min
Flavobacterium spartansii infection
Diagnosis-first profile covering flavobacterium spartansii infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthBacterial / flavobacterialDisease
Disease / condition profile11 min
Saprolegnia diclina infection
Diagnosis-first profile covering saprolegnia diclina infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthOomycete / water mouldDisease
Disease / condition profile11 min
Exophiala salmonis infection
Diagnosis-first profile covering exophiala salmonis infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthFungal / systemicDisease
Disease / condition profile11 min
Ichthyophonus hoferi infection
Diagnosis-first profile covering ichthyophonus hoferi infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthProtistan / systemicDisease
Disease / condition profile11 min
Tetracapsuloides bryosalmonae infection (proliferative kidney disease)
Diagnosis-first profile covering tetracapsuloides bryosalmonae infection (proliferative kidney disease), its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthMyxozoan / kidneyDisease
Disease / condition profile11 min
Thelohanellus kitauei infection
Diagnosis-first profile covering thelohanellus kitauei infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthMyxozoan / intestinalDisease
Disease / condition profile11 min
Spironucleus vortens infection
Diagnosis-first profile covering spironucleus vortens infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / flagellateDisease
Disease / condition profile11 min
Spironucleus salmonicida infection
Diagnosis-first profile covering spironucleus salmonicida infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / flagellateDisease
Disease / condition profile11 min
Piscinoodinium pillulare infestation
Diagnosis-first profile covering piscinoodinium pillulare infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / dinoflagellateDisease
Disease / condition profile11 min
Capillaria pterophylli infection
Diagnosis-first profile covering capillaria pterophylli infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / nematodeDisease
Disease / condition profile11 min
Pseudocapillaria tomentosa infection
Diagnosis-first profile covering pseudocapillaria tomentosa infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / nematodeDisease
Disease / condition profile11 min
Philometroides cyprini infection
Diagnosis-first profile covering philometroides cyprini infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / nematodeDisease
Disease / condition profile11 min
Acanthocephalus lucii infection
Diagnosis-first profile covering acanthocephalus lucii infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / acanthocephalanDisease
Disease / condition profile11 min
Microcotyle sebastis infestation
Diagnosis-first profile covering microcotyle sebastis infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile11 min
Pseudorhabdosynochus epinepheli infestation
Diagnosis-first profile covering pseudorhabdosynochus epinepheli infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile11 min
Dactylogyrus baueri gill-fluke infestation
Diagnosis-first profile covering dactylogyrus baueri gill-fluke infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile11 min
Dactylogyrus formosus gill-fluke infestation
Diagnosis-first profile covering dactylogyrus formosus gill-fluke infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile11 min
Spironucleus barkhanus infection
Diagnosis-first profile covering spironucleus barkhanus infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / flagellateDisease
Disease / condition profile11 min
Spironucleus salmonis infection
Diagnosis-first profile covering spironucleus salmonis infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / flagellateDisease
Disease / condition profile11 min
Spironucleus torosa infection
Diagnosis-first profile covering spironucleus torosa infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / flagellateDisease
Disease / condition profile11 min
Glugea stephani microsporidial infection
Diagnosis-first profile covering glugea stephani microsporidial infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthMicrosporidian / internalDisease
Disease / condition profile11 min
Glugea anomala microsporidial infection
Diagnosis-first profile covering glugea anomala microsporidial infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthMicrosporidian / internalDisease
Disease / condition profile11 min
Loma morhua microsporidial infection
Diagnosis-first profile covering loma morhua microsporidial infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthMicrosporidian / gillDisease
Disease / condition profile11 min
Loma embiotocia microsporidial infection
Diagnosis-first profile covering loma embiotocia microsporidial infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthMicrosporidian / gillDisease
Disease / condition profile11 min
Ovipleistophora mirandellae microsporidial infection
Diagnosis-first profile covering ovipleistophora mirandellae microsporidial infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthMicrosporidian / internalDisease
Disease / condition profile11 min
Henneguya salminicola infection
Diagnosis-first profile covering henneguya salminicola infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthMyxozoan / muscleDisease
Disease / condition profile11 min
Pseudorhabdosynochus americanus infestation
Diagnosis-first profile covering pseudorhabdosynochus americanus infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile11 min
Pseudorhabdosynochus yucatanensis infestation
Diagnosis-first profile covering pseudorhabdosynochus yucatanensis infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile11 min
Pseudorhabdosynochus kritskyi infestation
Diagnosis-first profile covering pseudorhabdosynochus kritskyi infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile11 min
Pseudorhabdosynochus capurroi infestation
Diagnosis-first profile covering pseudorhabdosynochus capurroi infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile11 min
Pseudorhabdosynochus sulamericanus infestation
Diagnosis-first profile covering pseudorhabdosynochus sulamericanus infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile11 min
Pseudorhabdosynochus beverleyburtonae infestation
Diagnosis-first profile covering pseudorhabdosynochus beverleyburtonae infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile11 min
Pseudorhabdosynochus monaensis infestation
Diagnosis-first profile covering pseudorhabdosynochus monaensis infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile11 min
Pseudorhabdosynochus guerreroensis infestation
Diagnosis-first profile covering pseudorhabdosynochus guerreroensis infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile11 min
Pseudorhabdosynochus urceolus infestation
Diagnosis-first profile covering pseudorhabdosynochus urceolus infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile11 min
Pseudorhabdosynochus spirani infestation
Diagnosis-first profile covering pseudorhabdosynochus spirani infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile11 min
Pseudorhabdosynochus fulgidus infestation
Diagnosis-first profile covering pseudorhabdosynochus fulgidus infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile11 min
Pseudorhabdosynochus tabogaensis infestation
Diagnosis-first profile covering pseudorhabdosynochus tabogaensis infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile11 min
Pseudorhabdosynochus anulus infestation
Diagnosis-first profile covering pseudorhabdosynochus anulus infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile11 min
Pseudorhabdosynochus amplidiscatum infestation
Diagnosis-first profile covering pseudorhabdosynochus amplidiscatum infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile11 min
Clinostomum complanatum infection
Diagnosis-first profile covering clinostomum complanatum infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / trematodeDisease
Disease / condition profile11 min
Diplostomum spathaceum eye-fluke infection
Diagnosis-first profile covering diplostomum spathaceum eye-fluke infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / trematodeDisease
Disease / condition profile11 min
Bolbophorus confusus parasite infection
Diagnosis-first profile covering bolbophorus confusus parasite infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / trematodeDisease
Symptom differential10 min
Why are my fish sick after an air-line check valve was installed backwards?
Differential guide for why are my fish sick after an air-line check valve was installed backwards?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthEquipment / aerationTimeline
Symptom differential10 min
Why are my fish sick after a filter impeller jammed while the motor was running?
Differential guide for why are my fish sick after a filter impeller jammed while the motor was running?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthEquipment / filtrationTimeline
Symptom differential10 min
Why are my fish sick after a filter venturi stopped drawing air?
Differential guide for why are my fish sick after a filter venturi stopped drawing air?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthEquipment / aerationTimeline
Symptom differential10 min
Why are my fish sick after the filter output was moved below the surface?
Differential guide for why are my fish sick after the filter output was moved below the surface?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthEquipment / gas exchangeTimeline
Symptom differential10 min
Why are my fish sick after a pump developed an airlock or cavitation?
Differential guide for why are my fish sick after a pump developed an airlock or cavitation?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthEquipment / circulationTimeline
Symptom differential10 min
Why are my fish sick after power returned but the pump did not restart?
Differential guide for why are my fish sick after power returned but the pump did not restart?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthEquipment / outage recoveryTimeline
Symptom differential10 min
Why are my fish sick after backup aeration ran out during a power outage?
Differential guide for why are my fish sick after backup aeration ran out during a power outage?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthEmergency / oxygenTimeline
Symptom differential10 min
Why are my fish sick after generator exhaust entered the aquarium room?
Differential guide for why are my fish sick after generator exhaust entered the aquarium room?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthEnvironmental exposure / airTimeline
Symptom differential10 min
Why are my fish sick after an automatic feeder jammed and stopped feeding?
Differential guide for why are my fish sick after an automatic feeder jammed and stopped feeding?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthFeeding / equipmentTimeline
Symptom differential10 min
Why are my fish sick after a cooling fan failed?
Differential guide for why are my fish sick after a cooling fan failed?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthTemperature / equipmentTimeline
Symptom differential10 min
Why are my fish sick after the temperature probe fell out of the water?
Differential guide for why are my fish sick after the temperature probe fell out of the water?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthTemperature / controllerTimeline
Symptom differential10 min
Why are my fish sick after relying on an inaccurate thermometer?
Differential guide for why are my fish sick after relying on an inaccurate thermometer?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthTemperature / measurementTimeline
Symptom differential10 min
Why are my fish sick after fly spray or insecticide was used nearby?
Differential guide for why are my fish sick after fly spray or insecticide was used nearby?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthChemical exposure / airborneTimeline
Symptom differential10 min
Why are my fish sick after an insect fogger or bug bomb was used in the room?
Differential guide for why are my fish sick after an insect fogger or bug bomb was used in the room?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthChemical exposure / airborneTimeline
Symptom differential10 min
Why are my fish sick after PVC cement or solvent was used on aquarium plumbing?
Differential guide for why are my fish sick after pvc cement or solvent was used on aquarium plumbing?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthChemical exposure / plumbingTimeline
Symptom differential10 min
Why are my fish sick after an aquarium magnet started corroding?
Differential guide for why are my fish sick after an aquarium magnet started corroding?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthEquipment / corrosionTimeline
Symptom differential10 min
Why are my fish sick after a metal clamp or fitting started rusting?
Differential guide for why are my fish sick after a metal clamp or fitting started rusting?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthEquipment / corrosionTimeline
Symptom differential10 min
Why are my fish sick after a glass heater cracked?
Differential guide for why are my fish sick after a glass heater cracked?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthEquipment / heaterTimeline
Symptom differential10 min
Why are my fish sick after adding a 3D-printed part?
Differential guide for why are my fish sick after adding a 3d-printed part?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthMaterials / contaminationTimeline
Symptom differential10 min
Why are my pond fish sick after liner adhesive or sealant was used?
Differential guide for why are my pond fish sick after liner adhesive or sealant was used?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthPond / chemical exposureTimeline
Symptom differential10 min
Why are my fish sick after eating mosquito larvae collected outdoors?
Differential guide for why are my fish sick after eating mosquito larvae collected outdoors?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthFeeding / live foodTimeline
Symptom differential10 min
Why are my fish sick after eating insects collected outdoors?
Differential guide for why are my fish sick after eating insects collected outdoors?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthFeeding / live foodTimeline
Symptom differential10 min
Why are my fish sick after frozen food thawed and was refrozen?
Differential guide for why are my fish sick after frozen food thawed and was refrozen?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthFeeding / food storageTimeline
Symptom differential10 min
Why is my fish sick after jumping out and being returned to the tank?
Differential guide for why is my fish sick after jumping out and being returned to the tank?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthTrauma / air exposureTimeline
Symptom differential10 min
Why is my fish sick after being trapped behind decor or equipment?
Differential guide for why is my fish sick after being trapped behind decor or equipment?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthTrauma / entrapmentTimeline
Symptom differential10 min
Why is my fish sick after being pinned against a filter intake?
Differential guide for why is my fish sick after being pinned against a filter intake?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthTrauma / intakeTimeline
Symptom differential10 min
Why is my fish sick after being pulled into a siphon during a water change?
Differential guide for why is my fish sick after being pulled into a siphon during a water change?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthTrauma / maintenanceTimeline
Symptom differential10 min
Why is my fish sick after being dropped during transfer?
Differential guide for why is my fish sick after being dropped during transfer?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthTrauma / handlingTimeline
Symptom differential10 min
Why did a shipped fish get worse soon after the transport bag was opened?
Differential guide for why did a shipped fish get worse soon after the transport bag was opened?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthTransport / acclimationTimeline
Symptom differential10 min
Why are my fish sick after transport-bag water was poured into the aquarium?
Differential guide for why are my fish sick after transport-bag water was poured into the aquarium?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthTransport / biosecurityTimeline
Symptom differential10 min
Why is my marine fish sick after a freshwater dip?
Differential guide for why is my marine fish sick after a freshwater dip?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthMarine / osmotic stressTimeline
Symptom differential10 min
Why are my marine fish sick after the auto top-off stuck on?
Differential guide for why are my marine fish sick after the auto top-off stuck on?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthMarine / salinityTimeline
Symptom differential10 min
Why are my marine fish sick after saltwater was put in the auto top-off reservoir?
Differential guide for why are my marine fish sick after saltwater was put in the auto top-off reservoir?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthMarine / salinityTimeline
Symptom differential10 min
Why are my marine fish sick after refugium macroalgae died off?
Differential guide for why are my marine fish sick after refugium macroalgae died off?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthMarine / refugiumTimeline
Symptom differential10 min
Why are my marine fish sick after the refugium light failed?
Differential guide for why are my marine fish sick after the refugium light failed?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthMarine / refugiumTimeline
Symptom differential10 min
Why are my marine fish sick after a calcium reactor released too much CO2?
Differential guide for why are my marine fish sick after a calcium reactor released too much co2?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthMarine / equipmentTimeline
Symptom differential10 min
Why are my marine fish sick after activated-carbon dust entered the display?
Differential guide for why are my marine fish sick after activated-carbon dust entered the display?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthMarine / filtrationTimeline
Symptom differential10 min
Why are my marine fish sick after disturbed sand released a rotten-egg smell?
Differential guide for why are my marine fish sick after disturbed sand released a rotten-egg smell?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthMarine / substrateTimeline
Symptom differential10 min
Why is my marine fish sick after an anemone was damaged by a powerhead?
Differential guide for why is my marine fish sick after an anemone was damaged by a powerhead?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthMarine / livestock eventTimeline
Symptom differential10 min
Why are my fish sick after seashells or coral skeleton were added?
Differential guide for why are my fish sick after seashells or coral skeleton were added?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthMaterials / water chemistryTimeline
Symptom differential10 min
Why are my fish sick after the filter was cleaned too thoroughly?
Differential guide for why are my fish sick after the filter was cleaned too thoroughly?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthFiltration / biofilterTimeline
Symptom differential10 min
Why are my fish sick after a water-change hose picked up household contamination?
Differential guide for why are my fish sick after a water-change hose picked up household contamination?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthMaintenance / contaminationTimeline
Symptom differential10 min
Why are my pond fish sick after the waterfall or return stream stopped?
Differential guide for why are my pond fish sick after the waterfall or return stream stopped?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthPond / circulationTimeline
Symptom differential10 min
Why are my pond fish sick after the pump intake clogged with leaves?
Differential guide for why are my pond fish sick after the pump intake clogged with leaves?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthPond / filtrationTimeline
Symptom differential10 min
Why are my pond fish sick after a large amount of leaf litter fell into the pond?
Differential guide for why are my pond fish sick after a large amount of leaf litter fell into the pond?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthPond / organic loadTimeline
Symptom differential10 min
Why are my pond fish sick after many birds began using the pond?
Differential guide for why are my pond fish sick after many birds began using the pond?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthPond / wildlifeTimeline
Symptom differential10 min
Why are my fish sick after uncured concrete or cement decor was added?
Differential guide for why are my fish sick after uncured concrete or cement decor was added?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthMaterials / water chemistryTimeline
Symptom differential10 min
Why are my fish sick after a fire extinguisher was discharged nearby?
Differential guide for why are my fish sick after a fire extinguisher was discharged nearby?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthEnvironmental exposure / airborneTimeline
Symptom differential10 min
Why are my fish sick after second-hand equipment with unknown residues was added?
Differential guide for why are my fish sick after second-hand equipment with unknown residues was added?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthEquipment / contaminationTimeline
Symptom differential10 min
Why are my fish sick after an ozone or ionising air purifier was used nearby?
Differential guide for why are my fish sick after an ozone or ionising air purifier was used nearby?, with key environmental checks, look-alikes and evidence-led next steps.
Fish healthEnvironmental exposure / airTimeline
Disease / condition profile10 min
Lactococcus formosensis infection
Diagnosis-first profile covering lactococcus formosensis infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthBacterial / emergingDisease
Disease / condition profile10 min
Shewanella oncorhynchi infection
Diagnosis-first profile covering shewanella oncorhynchi infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthBacterial / emergingDisease
Disease / condition profile10 min
Kocuria rhizophila infection in fish
Diagnosis-first profile covering kocuria rhizophila infection in fish, its key look-alikes, evidence limits and safer response priorities.
Fish healthBacterial / opportunisticDisease
Disease / condition profile10 min
Sphingomonas paucimobilis infection in fish
Diagnosis-first profile covering sphingomonas paucimobilis infection in fish, its key look-alikes, evidence limits and safer response priorities.
Fish healthBacterial / opportunisticDisease
Disease / condition profile10 min
Microplastic exposure toxicity
Diagnosis-first profile covering microplastic exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / contaminantDisease
Disease / condition profile10 min
Nanoplastic exposure toxicity
Diagnosis-first profile covering nanoplastic exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / contaminantDisease
Disease / condition profile10 min
PFAS exposure toxicity
Diagnosis-first profile covering pfas exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / contaminantDisease
Disease / condition profile10 min
PFOA exposure toxicity
Diagnosis-first profile covering pfoa exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / contaminantDisease
Disease / condition profile10 min
PFOS exposure toxicity
Diagnosis-first profile covering pfos exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / contaminantDisease
Disease / condition profile10 min
Bisphenol A toxicity
Diagnosis-first profile covering bisphenol a toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / endocrine-active chemicalDisease
Disease / condition profile10 min
Bisphenol S toxicity
Diagnosis-first profile covering bisphenol s toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / endocrine-active chemicalDisease
Disease / condition profile10 min
Phthalate plasticiser exposure toxicity
Diagnosis-first profile covering phthalate plasticiser exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / plasticiserDisease
Disease / condition profile10 min
DEHP exposure toxicity
Diagnosis-first profile covering dehp exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / plasticiserDisease
Disease / condition profile10 min
DBP exposure toxicity
Diagnosis-first profile covering dbp exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / plasticiserDisease
Disease / condition profile10 min
Organophosphate pesticide toxicity
Diagnosis-first profile covering organophosphate pesticide toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / pesticideDisease
Disease / condition profile10 min
Pyrethroid insecticide toxicity
Diagnosis-first profile covering pyrethroid insecticide toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / pesticideDisease
Disease / condition profile10 min
Neonicotinoid insecticide toxicity
Diagnosis-first profile covering neonicotinoid insecticide toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / pesticideDisease
Disease / condition profile10 min
Glyphosate herbicide toxicity
Diagnosis-first profile covering glyphosate herbicide toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / herbicideDisease
Disease / condition profile10 min
Atrazine herbicide toxicity
Diagnosis-first profile covering atrazine herbicide toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / herbicideDisease
Disease / condition profile10 min
2,4-D herbicide toxicity
Diagnosis-first profile covering 2,4-d herbicide toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / herbicideDisease
Disease / condition profile10 min
Paraquat herbicide toxicity
Diagnosis-first profile covering paraquat herbicide toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / herbicideDisease
Disease / condition profile10 min
Diesel fuel exposure toxicity
Diagnosis-first profile covering diesel fuel exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / petroleumDisease
Disease / condition profile10 min
Petrol or gasoline exposure toxicity
Diagnosis-first profile covering petrol or gasoline exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / petroleumDisease
Disease / condition profile10 min
Polycyclic aromatic hydrocarbon (PAH) toxicity
Diagnosis-first profile covering polycyclic aromatic hydrocarbon (pah) toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / petroleumDisease
Disease / condition profile10 min
Benzene exposure toxicity
Diagnosis-first profile covering benzene exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / solventDisease
Disease / condition profile10 min
Toluene exposure toxicity
Diagnosis-first profile covering toluene exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / solventDisease
Disease / condition profile10 min
Ethylene glycol exposure toxicity
Diagnosis-first profile covering ethylene glycol exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / solventDisease
Disease / condition profile10 min
Propylene glycol exposure toxicity
Diagnosis-first profile covering propylene glycol exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / solventDisease
Disease / condition profile10 min
Chlorhexidine toxicity
Diagnosis-first profile covering chlorhexidine toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / biocideDisease
Disease / condition profile10 min
Potassium permanganate toxicity
Diagnosis-first profile covering potassium permanganate toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthTreatment / oxidising chemicalDisease
Disease / condition profile10 min
Quaternary ammonium compound toxicity
Diagnosis-first profile covering quaternary ammonium compound toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / disinfectantDisease
Disease / condition profile10 min
Essential oil exposure toxicity
Diagnosis-first profile covering essential oil exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / household chemicalDisease
Disease / condition profile10 min
Tea tree oil exposure toxicity
Diagnosis-first profile covering tea tree oil exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / household chemicalDisease
Disease / condition profile10 min
Nicotine exposure toxicity
Diagnosis-first profile covering nicotine exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / emerging contaminantDisease
Disease / condition profile10 min
Caffeine exposure toxicity
Diagnosis-first profile covering caffeine exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / emerging contaminantDisease
Disease / condition profile10 min
Paracetamol (acetaminophen) exposure toxicity
Diagnosis-first profile covering paracetamol (acetaminophen) exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / pharmaceuticalDisease
Disease / condition profile10 min
Ibuprofen exposure toxicity
Diagnosis-first profile covering ibuprofen exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / pharmaceuticalDisease
Disease / condition profile10 min
Diclofenac exposure toxicity
Diagnosis-first profile covering diclofenac exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / pharmaceuticalDisease
Disease / condition profile10 min
Fluoxetine exposure toxicity
Diagnosis-first profile covering fluoxetine exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / pharmaceuticalDisease
Disease / condition profile10 min
Metformin exposure toxicity
Diagnosis-first profile covering metformin exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / pharmaceuticalDisease
Disease / condition profile10 min
Antibiotic residue exposure
Diagnosis-first profile covering antibiotic residue exposure, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / pharmaceuticalDisease
Disease / condition profile10 min
Molybdenum exposure toxicity
Diagnosis-first profile covering molybdenum exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / metalDisease
Disease / condition profile10 min
Cobalt exposure toxicity
Diagnosis-first profile covering cobalt exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / metalDisease
Disease / condition profile10 min
Silver exposure toxicity
Diagnosis-first profile covering silver exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / metalDisease
Disease / condition profile10 min
Triclosan exposure toxicity
Diagnosis-first profile covering triclosan exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / antimicrobialDisease
Disease / condition profile10 min
Triclocarban exposure toxicity
Diagnosis-first profile covering triclocarban exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / antimicrobialDisease
Disease / condition profile10 min
Nonylphenol exposure toxicity
Diagnosis-first profile covering nonylphenol exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / endocrine-active chemicalDisease
Disease / condition profile10 min
PBDE flame-retardant toxicity
Diagnosis-first profile covering pbde flame-retardant toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / persistent organic pollutantDisease
Disease / condition profile10 min
Benzophenone-3 (oxybenzone) toxicity
Diagnosis-first profile covering benzophenone-3 (oxybenzone) toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / UV-filter chemicalDisease
Disease / condition profile10 min
Polychlorinated biphenyl (PCB) exposure toxicity
Diagnosis-first profile covering polychlorinated biphenyl (pcb) exposure toxicity, its key look-alikes, evidence limits and safer response priorities.
Fish healthEnvironmental / persistent organic pollutantDisease
Symptom differential10 min
Why are my fish sick after cut flowers or florist greenery were added to the aquarium?
Differential guide for why are my fish sick after cut flowers or florist greenery were added to the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthPlant / chemical contaminationTimeline
Symptom differential10 min
Why are my fish sick after hand soap residue entered the aquarium?
Differential guide for why are my fish sick after hand soap residue entered the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthHousehold residueTimeline
Symptom differential10 min
Why are my fish sick after hand lotion or moisturiser contacted the water?
Differential guide for why are my fish sick after hand lotion or moisturiser contacted the water?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthPersonal-care residueTimeline
Symptom differential10 min
Why are my fish sick after pesticide-treated houseplants were handled near the aquarium?
Differential guide for why are my fish sick after pesticide-treated houseplants were handled near the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthPesticide exposureTimeline
Symptom differential10 min
Why are my fish sick after nail-polish remover or solvent fumes were used nearby?
Differential guide for why are my fish sick after nail-polish remover or solvent fumes were used nearby?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthAirborne chemical exposureTimeline
Symptom differential10 min
Why are my fish sick after paint fumes were present near the aquarium?
Differential guide for why are my fish sick after paint fumes were present near the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthAirborne chemical exposureTimeline
Symptom differential10 min
Why are my fish sick after fertiliser was used on houseplants near the aquarium?
Differential guide for why are my fish sick after fertiliser was used on houseplants near the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthFertiliser exposureTimeline
Symptom differential10 min
Why are my fish sick after bleach was used for cleaning near the aquarium?
Differential guide for why are my fish sick after bleach was used for cleaning near the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthCleaning chemical exposureTimeline
Symptom differential10 min
Why are my fish sick after unknown wood or timber decor was added to the aquarium?
Differential guide for why are my fish sick after unknown wood or timber decor was added to the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthDecor / material exposureTimeline
Symptom differential10 min
Why are my fish sick after a humidifier additive or fragrance was used near the aquarium?
Differential guide for why are my fish sick after a humidifier additive or fragrance was used near the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthAirborne chemical exposureTimeline
Symptom differential10 min
Why are my fish sick after water collected from a dehumidifier was used in the aquarium?
Differential guide for why are my fish sick after water collected from a dehumidifier was used in the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthSource-water contaminationTimeline
Symptom differential10 min
Why are my fish sick after wood stain or varnish fumes were present near the aquarium?
Differential guide for why are my fish sick after wood stain or varnish fumes were present near the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthAirborne chemical exposureTimeline
Symptom differential10 min
Why are my fish sick after mothballs or moth-repellent products were used near the aquarium?
Differential guide for why are my fish sick after mothballs or moth-repellent products were used near the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthAirborne chemical exposureTimeline
Symptom differential10 min
Why are my fish sick after spray foam or expanding foam was curing near the aquarium?
Differential guide for why are my fish sick after spray foam or expanding foam was curing near the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthMaterial / curing exposureTimeline
Symptom differential10 min
Why are my fish sick after soldering flux or solder fumes were produced near the aquarium?
Differential guide for why are my fish sick after soldering flux or solder fumes were produced near the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthRenovation / airborne exposureTimeline
Symptom differential10 min
Why are my fish sick after a brass fitting or valve was added to aquarium plumbing?
Differential guide for why are my fish sick after a brass fitting or valve was added to aquarium plumbing?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthPlumbing / metal exposureTimeline
Symptom differential10 min
Why are my fish sick after galvanised metal contacted aquarium water?
Differential guide for why are my fish sick after galvanised metal contacted aquarium water?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthEquipment / metal exposureTimeline
Symptom differential10 min
Why are my fish sick after UV resin was used in or near the aquarium?
Differential guide for why are my fish sick after uv resin was used in or near the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthMaterial / curing exposureTimeline
Symptom differential10 min
Why are my fish sick after new copper plumbing was connected to the water supply?
Differential guide for why are my fish sick after new copper plumbing was connected to the water supply?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthPlumbing / metal exposureTimeline
Symptom differential10 min
Why are my fish sick after water was used after a hot-water cylinder flush?
Differential guide for why are my fish sick after water was used after a hot-water cylinder flush?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthSource-water changeTimeline
Symptom differential10 min
Why are my fish sick after water from a household softener was used?
Differential guide for why are my fish sick after water from a household softener was used?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthSource-water chemistryTimeline
Symptom differential10 min
Why are my fish sick after RO water was used without appropriate remineralisation?
Differential guide for why are my fish sick after ro water was used without appropriate remineralisation?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthSource-water chemistryTimeline
Symptom differential10 min
Why are my fish sick after DI water was used without appropriate remineralisation?
Differential guide for why are my fish sick after di water was used without appropriate remineralisation?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthSource-water chemistryTimeline
Symptom differential10 min
Why are my fish sick after an aluminium fitting or part contacted aquarium water?
Differential guide for why are my fish sick after an aluminium fitting or part contacted aquarium water?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthEquipment / metal exposureTimeline
Symptom differential10 min
Why are my fish sick after new carbon media was added without rinsing?
Differential guide for why are my fish sick after new carbon media was added without rinsing?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthFilter-media exposureTimeline
Symptom differential10 min
Why are my fish sick after phosphate-remover dust entered the water?
Differential guide for why are my fish sick after phosphate-remover dust entered the water?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthFilter-media exposureTimeline
Symptom differential10 min
Why are my fish sick after zeolite was added to the filter?
Differential guide for why are my fish sick after zeolite was added to the filter?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthFilter-media changeTimeline
Symptom differential10 min
Why are my fish sick after a coin or unknown metal object fell into the aquarium?
Differential guide for why are my fish sick after a coin or unknown metal object fell into the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthForeign-object / metal exposureTimeline
Symptom differential10 min
Why are my fish sick after new filter floss or fabric left residue?
Differential guide for why are my fish sick after new filter floss or fabric left residue?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthMaterial residueTimeline
Symptom differential10 min
Why are my fish sick after new sponge or foam material was added?
Differential guide for why are my fish sick after new sponge or foam material was added?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthMaterial residueTimeline
Symptom differential10 min
Why are my fish sick after a new rubber hose was used?
Differential guide for why are my fish sick after a new rubber hose was used?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthEquipment material exposureTimeline
Symptom differential10 min
Why are my fish sick after fibreglass dust was produced during renovation near the aquarium?
Differential guide for why are my fish sick after fibreglass dust was produced during renovation near the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthRenovation contaminationTimeline
Symptom differential10 min
Why are my fish sick after ceiling or insulation dust entered the aquarium area?
Differential guide for why are my fish sick after ceiling or insulation dust entered the aquarium area?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthRenovation contaminationTimeline
Symptom differential10 min
Why are my fish sick after a cleaning or vacuum hose had chemical residue?
Differential guide for why are my fish sick after a cleaning or vacuum hose had chemical residue?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthEquipment contaminationTimeline
Symptom differential10 min
Why are my fish sick after cleaner residue remained on the tank lid?
Differential guide for why are my fish sick after cleaner residue remained on the tank lid?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthCleaning chemical exposureTimeline
Symptom differential10 min
Why are my fish sick after carpet cleaner or carpet-cleaning solution was used in the aquarium room?
Differential guide for why are my fish sick after carpet cleaner or carpet-cleaning solution was used in the aquarium room?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthCleaning chemical exposureTimeline
Symptom differential10 min
Why are my fish sick after furniture polish was sprayed or used near the aquarium?
Differential guide for why are my fish sick after furniture polish was sprayed or used near the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthAirborne chemical exposureTimeline
Symptom differential10 min
Why are my fish sick after the house was treated for pests?
Differential guide for why are my fish sick after the house was treated for pests?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthPesticide exposureTimeline
Symptom differential10 min
Why are my fish sick after rodent bait or bait residue may have contacted the aquarium?
Differential guide for why are my fish sick after rodent bait or bait residue may have contacted the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthPest-control contaminationTimeline
Symptom differential10 min
Why are my fish sick after a termite treatment was applied in or around the house?
Differential guide for why are my fish sick after a termite treatment was applied in or around the house?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthPesticide exposureTimeline
Symptom differential10 min
Why are my fish sick after a mosquito coil was used near the aquarium?
Differential guide for why are my fish sick after a mosquito coil was used near the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthAirborne pesticide exposureTimeline
Symptom differential10 min
Why are my fish sick after fog-machine smoke was used nearby?
Differential guide for why are my fish sick after fog-machine smoke was used nearby?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthAirborne contaminantTimeline
Symptom differential10 min
Why are my fish sick after construction dust entered the aquarium area?
Differential guide for why are my fish sick after construction dust entered the aquarium area?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthRenovation contaminationTimeline
Symptom differential10 min
Why are my fish sick after sawdust from renovation reached the aquarium?
Differential guide for why are my fish sick after sawdust from renovation reached the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthRenovation contaminationTimeline
Symptom differential10 min
Why are my fish sick after plaster or drywall dust reached the aquarium?
Differential guide for why are my fish sick after plaster or drywall dust reached the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthRenovation contaminationTimeline
Symptom differential10 min
Why are my fish sick after cement dust reached the aquarium?
Differential guide for why are my fish sick after cement dust reached the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthRenovation contaminationTimeline
Symptom differential10 min
Why are my fish sick after metal-grinding dust was produced nearby?
Differential guide for why are my fish sick after metal-grinding dust was produced nearby?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthRenovation / metal contaminationTimeline
Symptom differential10 min
Why are my fish sick after welding fumes or particles were produced nearby?
Differential guide for why are my fish sick after welding fumes or particles were produced nearby?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthRenovation / airborne exposureTimeline
Symptom differential10 min
Why are my fish sick after rust remover was used near the aquarium?
Differential guide for why are my fish sick after rust remover was used near the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthChemical exposureTimeline
Symptom differential10 min
Why are my fish sick after paint thinner or solvent fumes were present nearby?
Differential guide for why are my fish sick after paint thinner or solvent fumes were present nearby?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthAirborne chemical exposureTimeline
Disease / condition profile10 min
Vibrio mimicus infection
Diagnosis-first profile covering vibrio mimicus infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthBacterial / emergingDisease
Disease / condition profile10 min
Aeromonas salmonicida subsp. achromogenes infection
Diagnosis-first profile covering aeromonas salmonicida subsp. achromogenes infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthBacterial / atypical AeromonasDisease
Disease / condition profile10 min
Candidatus Piscichlamydia salmonis infection
Diagnosis-first profile covering candidatus piscichlamydia salmonis infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthBacterial / epitheliocystis agentDisease
Disease / condition profile10 min
Candidatus Clavichlamydia salmonicola infection
Diagnosis-first profile covering candidatus clavichlamydia salmonicola infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthBacterial / epitheliocystis agentDisease
Disease / condition profile10 min
Candidatus Branchiomonas cysticola infection
Diagnosis-first profile covering candidatus branchiomonas cysticola infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthBacterial / gill agentDisease
Disease / condition profile10 min
Candidatus Parilichlamydia carangidicola infection
Diagnosis-first profile covering candidatus parilichlamydia carangidicola infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthBacterial / epitheliocystis agentDisease
Disease / condition profile10 min
Candidatus Syngnamydia salmonis infection
Diagnosis-first profile covering candidatus syngnamydia salmonis infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthBacterial / epitheliocystis agentDisease
Disease / condition profile10 min
Exophiala pisciphila infection
Diagnosis-first profile covering exophiala pisciphila infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthFungal / phaeohyphomycosisDisease
Disease / condition profile10 min
Saprolegnia ferax infection
Diagnosis-first profile covering saprolegnia ferax infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthFungal / oomyceteDisease
Disease / condition profile10 min
Macrogyrodactylus polypteri infestation
Diagnosis-first profile covering macrogyrodactylus polypteri infestation, its key look-alikes, evidence limits and safer response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile10 min
Enterogyrus cichlidarum infection
Diagnosis-first profile covering enterogyrus cichlidarum infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile10 min
Pseudodactylogyrus anguillae gill-fluke infection
Diagnosis-first profile covering pseudodactylogyrus anguillae gill-fluke infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile10 min
Pseudodactylogyrus bini gill-fluke infection
Diagnosis-first profile covering pseudodactylogyrus bini gill-fluke infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile10 min
Argulus foliaceus fish-louse infestation
Diagnosis-first profile covering argulus foliaceus fish-louse infestation, its key look-alikes, evidence limits and safer response priorities.
Fish healthParasitic / crustaceanDisease
Disease / condition profile10 min
Argulus coregoni fish-louse infestation
Diagnosis-first profile covering argulus coregoni fish-louse infestation, its key look-alikes, evidence limits and safer response priorities.
Fish healthParasitic / crustaceanDisease
Disease / condition profile10 min
Lamproglena monodi gill-copepod infestation
Diagnosis-first profile covering lamproglena monodi gill-copepod infestation, its key look-alikes, evidence limits and safer response priorities.
Fish healthParasitic / copepodDisease
Disease / condition profile10 min
Camallanus cotti intestinal nematode infection
Diagnosis-first profile covering camallanus cotti intestinal nematode infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthParasitic / nematodeDisease
Disease / condition profile10 min
Chilodonella hexasticha infestation
Diagnosis-first profile covering chilodonella hexasticha infestation, its key look-alikes, evidence limits and safer response priorities.
Fish healthParasitic / ciliateDisease
Disease / condition profile10 min
Kudoa iwatai infection
Diagnosis-first profile covering kudoa iwatai infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthParasitic / myxozoanDisease
Disease / condition profile10 min
Trichodina mutabilis infestation
Diagnosis-first profile covering trichodina mutabilis infestation, its key look-alikes, evidence limits and safer response priorities.
Fish healthParasitic / ciliateDisease
Disease / condition profile10 min
Diplozoon paradoxum gill-fluke infection
Diagnosis-first profile covering diplozoon paradoxum gill-fluke infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile10 min
Eudiplozoon nipponicum gill-fluke infection
Diagnosis-first profile covering eudiplozoon nipponicum gill-fluke infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile10 min
Sinergasilus polycolpus gill-copepod infestation
Diagnosis-first profile covering sinergasilus polycolpus gill-copepod infestation, its key look-alikes, evidence limits and safer response priorities.
Fish healthParasitic / copepodDisease
Disease / condition profile10 min
Cryptocotyle lingua black-spot infection
Diagnosis-first profile covering cryptocotyle lingua black-spot infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthParasitic / trematodeDisease
Disease / condition profile10 min
Haplorchis pumilio metacercarial infection
Diagnosis-first profile covering haplorchis pumilio metacercarial infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthParasitic / trematodeDisease
Disease / condition profile10 min
Eustrongylides ignotus larval infection
Diagnosis-first profile covering eustrongylides ignotus larval infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthParasitic / nematodeDisease
Disease / condition profile10 min
Procamallanus laeviconchus intestinal nematode infection
Diagnosis-first profile covering procamallanus laeviconchus intestinal nematode infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthParasitic / nematodeDisease
Disease / condition profile10 min
Ergasilus briani gill-copepod infestation
Diagnosis-first profile covering ergasilus briani gill-copepod infestation, its key look-alikes, evidence limits and safer response priorities.
Fish healthParasitic / copepodDisease
Disease / condition profile10 min
Macrogyrodactylus clarii infestation
Diagnosis-first profile covering macrogyrodactylus clarii infestation, its key look-alikes, evidence limits and safer response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile10 min
Sphaerospora renicola infection
Diagnosis-first profile covering sphaerospora renicola infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthParasitic / myxozoanDisease
Disease / condition profile10 min
Chloromyxum cyprini infection
Diagnosis-first profile covering chloromyxum cyprini infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthParasitic / myxozoanDisease
Disease / condition profile10 min
Filisoma argusum acanthocephalan infection
Diagnosis-first profile covering filisoma argusum acanthocephalan infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthParasitic / acanthocephalanDisease
Disease / condition profile10 min
Cryptosporidium bollandi infection
Diagnosis-first profile covering cryptosporidium bollandi infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthParasitic / protozoanDisease
Disease / condition profile10 min
Fathead minnow nidovirus infection
Diagnosis-first profile covering fathead minnow nidovirus infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthViral / nidovirusDisease
Disease / condition profile10 min
Piscine orthoreovirus 1 (PRV-1) infection
Diagnosis-first profile covering piscine orthoreovirus 1 (prv-1) infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthViral / orthoreovirusDisease
Disease / condition profile10 min
Piscine orthoreovirus 2 (PRV-2) infection
Diagnosis-first profile covering piscine orthoreovirus 2 (prv-2) infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthViral / orthoreovirusDisease
Disease / condition profile10 min
Pike-perch iridovirus infection
Diagnosis-first profile covering pike-perch iridovirus infection, its key look-alikes, evidence limits and safer response priorities.
Fish healthViral / iridovirusDisease
Disease / condition profile10 min
Cutaneous fibrosarcoma
Diagnosis-first profile covering cutaneous fibrosarcoma, its key look-alikes, evidence limits and safer response priorities.
Fish healthNeoplasia / mesenchymalDisease
Disease / condition profile10 min
T-cell lymphoma
Diagnosis-first profile covering t-cell lymphoma, its key look-alikes, evidence limits and safer response priorities.
Fish healthNeoplasia / lymphoidDisease
Disease / condition profile10 min
Thyroid follicular carcinoma
Diagnosis-first profile covering thyroid follicular carcinoma, its key look-alikes, evidence limits and safer response priorities.
Fish healthNeoplasia / endocrineDisease
Disease / condition profile10 min
Hepatocellular carcinoma
Diagnosis-first profile covering hepatocellular carcinoma, its key look-alikes, evidence limits and safer response priorities.
Fish healthNeoplasia / hepaticDisease
Disease / condition profile10 min
Xanthophoroma
Diagnosis-first profile covering xanthophoroma, its key look-alikes, evidence limits and safer response priorities.
Fish healthNeoplasia / chromatophoromaDisease
Disease / condition profile10 min
Peripheral nerve sheath tumour
Diagnosis-first profile covering peripheral nerve sheath tumour, its key look-alikes, evidence limits and safer response priorities.
Fish healthNeoplasia / neuroectodermalDisease
Disease / condition profile10 min
Seminoma
Diagnosis-first profile covering seminoma, its key look-alikes, evidence limits and safer response priorities.
Fish healthNeoplasia / germ-cellDisease
Disease / condition profile10 min
Gonadal germ-cell neoplasia
Diagnosis-first profile covering gonadal germ-cell neoplasia, its key look-alikes, evidence limits and safer response priorities.
Fish healthNeoplasia / germ-cellDisease
Disease / condition profile10 min
Branchioblastoma
Diagnosis-first profile covering branchioblastoma, its key look-alikes, evidence limits and safer response priorities.
Fish healthNeoplasia / branchialDisease
Disease / condition profile10 min
Squamous cell carcinoma
Diagnosis-first profile covering squamous cell carcinoma, its key look-alikes, evidence limits and safer response priorities.
Fish healthNeoplasia / epithelialDisease
Disease / condition profile10 min
Lipoma
Diagnosis-first profile covering lipoma, its key look-alikes, evidence limits and safer response priorities.
Fish healthNeoplasia / adiposeDisease
Disease / condition profile10 min
Osteosarcoma
Diagnosis-first profile covering osteosarcoma, its key look-alikes, evidence limits and safer response priorities.
Fish healthNeoplasia / boneDisease
Disease / condition profile10 min
Thymic epithelial tumour
Diagnosis-first profile covering thymic epithelial tumour, its key look-alikes, evidence limits and safer response priorities.
Fish healthNeoplasia / epithelialDisease
Symptom differential10 min
Why are my fish sick after a new aquarium heater was installed?
Differential guide for why are my fish sick after a new aquarium heater was installed?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthEquipment / temperatureTimeline
Symptom differential10 min
Why are my fish sick after a new aquarium chiller was installed?
Differential guide for why are my fish sick after a new aquarium chiller was installed?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthEquipment / temperatureTimeline
Symptom differential10 min
Why are my fish sick after the aquarium chiller stopped cooling?
Differential guide for why are my fish sick after the aquarium chiller stopped cooling?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthEquipment / temperatureTimeline
Symptom differential10 min
Why are my fish sick after the chiller temperature probe was moved?
Differential guide for why are my fish sick after the chiller temperature probe was moved?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthEquipment / temperatureTimeline
Symptom differential10 min
Why are my fish sick after a glass aquarium thermometer broke in the tank?
Differential guide for why are my fish sick after a glass aquarium thermometer broke in the tank?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthEquipment / contaminationTimeline
Symptom differential10 min
Why are my fish sick after a grounding probe corroded in the aquarium?
Differential guide for why are my fish sick after a grounding probe corroded in the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthEquipment / metal exposureTimeline
Symptom differential10 min
Why are my fish sick after a submersible aquarium light cracked or leaked?
Differential guide for why are my fish sick after a submersible aquarium light cracked or leaked?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthEquipment / contaminationTimeline
Symptom differential10 min
Why are my fish sick after a pump seal failed or leaked into the water?
Differential guide for why are my fish sick after a pump seal failed or leaked into the water?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthEquipment / contaminationTimeline
Symptom differential10 min
Why are my fish sick after pump grease or oil leaked into the aquarium?
Differential guide for why are my fish sick after pump grease or oil leaked into the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthEquipment / contaminationTimeline
Symptom differential10 min
Why are my fish sick after oil from a compressed-air source reached the aquarium airline?
Differential guide for why are my fish sick after oil from a compressed-air source reached the aquarium airline?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthAeration / contaminationTimeline
Symptom differential10 min
Why are my fish sick after new airline tubing was installed?
Differential guide for why are my fish sick after new airline tubing was installed?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthAeration / material exposureTimeline
Symptom differential10 min
Why are my fish sick after the surface skimmer jammed or stopped drawing surface water?
Differential guide for why are my fish sick after the surface skimmer jammed or stopped drawing surface water?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthFiltration / flowTimeline
Symptom differential10 min
Why are my fish sick after a filter bypass valve was accidentally left open?
Differential guide for why are my fish sick after a filter bypass valve was accidentally left open?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthFiltration / flowTimeline
Symptom differential10 min
Why are my fish sick after canister-filter baskets or seals were reassembled incorrectly?
Differential guide for why are my fish sick after canister-filter baskets or seals were reassembled incorrectly?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthFiltration / flowTimeline
Symptom differential10 min
Why are my fish sick after a fine polishing pad clogged rapidly?
Differential guide for why are my fish sick after a fine polishing pad clogged rapidly?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthFiltration / flowTimeline
Symptom differential10 min
Why are my fish sick after biological filter media overheated while out of the tank?
Differential guide for why are my fish sick after biological filter media overheated while out of the tank?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthFiltration / biofilterTimeline
Symptom differential10 min
Why are my fish sick after biological filter media froze during storage or transport?
Differential guide for why are my fish sick after biological filter media froze during storage or transport?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthFiltration / biofilterTimeline
Symptom differential10 min
Why are my fish sick after freshwater biological media was exposed to strong salt water?
Differential guide for why are my fish sick after freshwater biological media was exposed to strong salt water?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthFiltration / biofilterTimeline
Symptom differential10 min
Why are my fish sick after regenerated filter resin was returned without complete neutralisation?
Differential guide for why are my fish sick after regenerated filter resin was returned without complete neutralisation?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthFilter media / chemical residueTimeline
Symptom differential10 min
Why are my fish sick after a filter sock or pad was washed with fabric softener?
Differential guide for why are my fish sick after a filter sock or pad was washed with fabric softener?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthFilter media / chemical residueTimeline
Symptom differential10 min
Why are my fish sick after a phosphate-remover media bag burst in the aquarium?
Differential guide for why are my fish sick after a phosphate-remover media bag burst in the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthFilter media / particulate exposureTimeline
Symptom differential10 min
Why are my fish sick after a zeolite media bag burst in the aquarium?
Differential guide for why are my fish sick after a zeolite media bag burst in the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthFilter media / particulate exposureTimeline
Symptom differential10 min
Why are my fish sick after ceramic biological media produced a large dust cloud?
Differential guide for why are my fish sick after ceramic biological media produced a large dust cloud?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthFilter media / particulate exposureTimeline
Symptom differential10 min
Why are my fish sick after a pressurised CO2 cylinder reached an end-of-tank dump?
Differential guide for why are my fish sick after a pressurised co2 cylinder reached an end-of-tank dump?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthCO2 / planted tankTimeline
Symptom differential10 min
Why are my fish sick after the CO2 cylinder was changed and the regulator was reset incorrectly?
Differential guide for why are my fish sick after the co2 cylinder was changed and the regulator was reset incorrectly?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthCO2 / planted tankTimeline
Symptom differential10 min
Why are my fish sick after CO2 drop-checker reagent spilled into the aquarium?
Differential guide for why are my fish sick after co2 drop-checker reagent spilled into the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthCO2 / chemical exposureTimeline
Symptom differential10 min
Why are my fish sick after a pH controller or probe was calibrated incorrectly?
Differential guide for why are my fish sick after a ph controller or probe was calibrated incorrectly?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthController / dosingTimeline
Symptom differential10 min
Why are my fish sick after a dosing line siphoned continuously into the aquarium?
Differential guide for why are my fish sick after a dosing line siphoned continuously into the aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthController / dosingTimeline
Symptom differential10 min
Why are my fish sick after a dosing-pump airlock cleared and delivered an unintended catch-up dose?
Differential guide for why are my fish sick after a dosing-pump airlock cleared and delivered an unintended catch-up dose?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthController / dosingTimeline
Symptom differential10 min
Why are my fish sick after slow-release fertiliser granules escaped from the substrate into the water?
Differential guide for why are my fish sick after slow-release fertiliser granules escaped from the substrate into the water?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthPlant fertiliser / exposureTimeline
Symptom differential10 min
Why are my fish sick after a soil or dirt substrate cap broke and exposed the underlying soil?
Differential guide for why are my fish sick after a soil or dirt substrate cap broke and exposed the underlying soil?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthAquascape / substrateTimeline
Symptom differential10 min
Why are my fish sick after active aquasoil was added to an established aquarium?
Differential guide for why are my fish sick after active aquasoil was added to an established aquarium?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthAquascape / substrateTimeline
Symptom differential10 min
Why are my fish sick after an anaerobic substrate pocket was opened during maintenance?
Differential guide for why are my fish sick after an anaerobic substrate pocket was opened during maintenance?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthAquascape / substrateTimeline
Symptom differential10 min
Why are my fish sick after RO product and reject lines were accidentally swapped?
Differential guide for why are my fish sick after ro product and reject lines were accidentally swapped?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthSource water / ROTimeline
Symptom differential10 min
Why are my fish sick after an exhausted carbon block allowed chlorine or chloramine breakthrough?
Differential guide for why are my fish sick after an exhausted carbon block allowed chlorine or chloramine breakthrough?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthSource water / ROTimeline
Symptom differential10 min
Why are my fish sick after an RO remineralisation cartridge became exhausted?
Differential guide for why are my fish sick after an ro remineralisation cartridge became exhausted?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthSource water / ROTimeline
Symptom differential10 min
Why are my fish sick after the water utility carried out emergency or shock chlorination?
Differential guide for why are my fish sick after the water utility carried out emergency or shock chlorination?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthMunicipal waterTimeline
Symptom differential10 min
Why are my fish sick after a well or bore pump was disinfected or serviced before aquarium water was drawn?
Differential guide for why are my fish sick after a well or bore pump was disinfected or serviced before aquarium water was drawn?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthSource water / wellTimeline
Symptom differential10 min
Why are my fish sick after a bore or well pump replacement stirred sediment into the source water?
Differential guide for why are my fish sick after a bore or well pump replacement stirred sediment into the source water?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthSource water / wellTimeline
Symptom differential10 min
Why are my fish sick after water was stored in an IBC tote or drum with an unknown previous use?
Differential guide for why are my fish sick after water was stored in an ibc tote or drum with an unknown previous use?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthStorage container / contaminationTimeline
Symptom differential10 min
Why are my fish sick after a new water-storage barrel had a strong plastic or chemical odour?
Differential guide for why are my fish sick after a new water-storage barrel had a strong plastic or chemical odour?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthStorage container / contaminationTimeline
Symptom differential10 min
Why are my fish sick after acrylic solvent cement was used on aquarium equipment or a sump?
Differential guide for why are my fish sick after acrylic solvent cement was used on aquarium equipment or a sump?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthMaterials / solventTimeline
Symptom differential10 min
Why are my fish sick after thread-locking compound was used on aquarium plumbing?
Differential guide for why are my fish sick after thread-locking compound was used on aquarium plumbing?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthMaterials / sealantTimeline
Symptom differential10 min
Why are my fish sick after pipe dope or liquid thread sealant was used on wet-side aquarium plumbing?
Differential guide for why are my fish sick after pipe dope or liquid thread sealant was used on wet-side aquarium plumbing?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthMaterials / sealantTimeline
Symptom differential10 min
Why are my fish sick after petroleum jelly was used on an aquarium O-ring or seal?
Differential guide for why are my fish sick after petroleum jelly was used on an aquarium o-ring or seal?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthMaterials / lubricantTimeline
Symptom differential10 min
Why are my fish sick after new vinyl tubing had a strong plastic or solvent odour?
Differential guide for why are my fish sick after new vinyl tubing had a strong plastic or solvent odour?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthMaterials / tubingTimeline
Symptom differential10 min
Why are my fish sick after a chiller heat exchanger or coil showed corrosion?
Differential guide for why are my fish sick after a chiller heat exchanger or coil showed corrosion?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthEquipment / metal exposureTimeline
Symptom differential10 min
Why are my fish sick after a UV steriliser quartz sleeve cracked or broke?
Differential guide for why are my fish sick after a uv steriliser quartz sleeve cracked or broke?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthEquipment / contaminationTimeline
Symptom differential10 min
Why are my fish sick after the activated-carbon postfilter on an ozone system became exhausted?
Differential guide for why are my fish sick after the activated-carbon postfilter on an ozone system became exhausted?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthOzone / equipmentTimeline
Symptom differential10 min
Why are my fish sick after an ORP controller probe failed while ozone was in use?
Differential guide for why are my fish sick after an orp controller probe failed while ozone was in use?, with environmental checks, exposure clues, look-alikes and evidence-led next steps.
Fish healthOzone / controllerTimeline
Disease / condition profile10 min
Pancreatic ductal adenocarcinoma
Diagnosis-first profile covering pancreatic ductal adenocarcinoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / pancreatic epithelialPathology
Disease / condition profile10 min
Esthesioneuroblastoma
Diagnosis-first profile covering esthesioneuroblastoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / neuroectodermalPathology
Disease / condition profile10 min
Perineurioma
Diagnosis-first profile covering perineurioma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / peripheral nerve sheathPathology
Disease / condition profile10 min
Papilloma
Diagnosis-first profile covering papilloma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / epithelialPathology
Disease / condition profile10 min
Neuronal embryonal tumour
Diagnosis-first profile covering neuronal embryonal tumour, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / neuroectodermalPathology
Disease / condition profile10 min
Retinoblastoma
Diagnosis-first profile covering retinoblastoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / ocular neuroectodermalPathology
Disease / condition profile10 min
Malignant melanoma
Diagnosis-first profile covering malignant melanoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / melanocyticPathology
Disease / condition profile10 min
Iridophoroma
Diagnosis-first profile covering iridophoroma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / chromatophorePathology
Disease / condition profile10 min
Basal cell carcinoma
Diagnosis-first profile covering basal cell carcinoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / epithelialPathology
Disease / condition profile10 min
Neuroblastoma
Diagnosis-first profile covering neuroblastoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / neuroectodermalPathology
Disease / condition profile10 min
Schwannoma
Diagnosis-first profile covering schwannoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / peripheral nerve sheathPathology
Disease / condition profile10 min
Ganglioneuroblastoma
Diagnosis-first profile covering ganglioneuroblastoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / neuroectodermalPathology
Disease / condition profile10 min
Renal cell carcinoma
Diagnosis-first profile covering renal cell carcinoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / renal epithelialPathology
Disease / condition profile10 min
Dysgerminoma
Diagnosis-first profile covering dysgerminoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / germ-cellPathology
Disease / condition profile10 min
Myxosarcoma
Diagnosis-first profile covering myxosarcoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / mesenchymalPathology
Disease / condition profile10 min
Liposarcoma
Diagnosis-first profile covering liposarcoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / adipocyticPathology
Disease / condition profile10 min
Epidermal carcinoma
Diagnosis-first profile covering epidermal carcinoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / epithelialPathology
Disease / condition profile10 min
Exocrine pancreatic adenocarcinoma
Diagnosis-first profile covering exocrine pancreatic adenocarcinoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / pancreatic epithelialPathology
Disease / condition profile10 min
Angioblastic meningioma
Diagnosis-first profile covering angioblastic meningioma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / meningealPathology
Disease / condition profile10 min
Osteoma
Diagnosis-first profile covering osteoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / bonePathology
Disease / condition profile10 min
Hemangiosarcoma
Diagnosis-first profile covering hemangiosarcoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / vascularPathology
Disease / condition profile10 min
Acinar cell carcinoma of the exocrine pancreas
Diagnosis-first profile covering acinar cell carcinoma of the exocrine pancreas, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / pancreatic acinarPathology
Disease / condition profile10 min
Spermatocytic seminoma
Diagnosis-first profile covering spermatocytic seminoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / germ-cellPathology
Disease / condition profile10 min
Small cell carcinoma of the intestine
Diagnosis-first profile covering small cell carcinoma of the intestine, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / intestinal epithelialPathology
Disease / condition profile10 min
Intestinal adenocarcinoma
Diagnosis-first profile covering intestinal adenocarcinoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / intestinal epithelialPathology
Disease / condition profile10 min
Ultimobranchial gland carcinoma
Diagnosis-first profile covering ultimobranchial gland carcinoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / endocrine epithelialPathology
Disease / condition profile10 min
Hepatocyte megalocytosis
Diagnosis-first profile covering hepatocyte megalocytosis, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / preneoplastic hepatic lesionPathology
Disease / condition profile10 min
Intestinal epithelial hyperplasia
Diagnosis-first profile covering intestinal epithelial hyperplasia, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / preneoplastic intestinal lesionPathology
Disease / condition profile10 min
Intestinal dysplasia
Diagnosis-first profile covering intestinal dysplasia, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / preneoplastic intestinal lesionPathology
Disease / condition profile10 min
Intestinal carcinoma, not otherwise specified
Diagnosis-first profile covering intestinal carcinoma, not otherwise specified, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / intestinal epithelialPathology
Disease / condition profile10 min
Tubular intestinal adenoma
Diagnosis-first profile covering tubular intestinal adenoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / intestinal benign epithelialPathology
Disease / condition profile10 min
Tubulovillous intestinal adenoma
Diagnosis-first profile covering tubulovillous intestinal adenoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / intestinal benign epithelialPathology
Disease / condition profile10 min
Intestinal carcinomatosis
Diagnosis-first profile covering intestinal carcinomatosis, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / metastatic patternPathology
Disease / condition profile10 min
Chondroma
Diagnosis-first profile covering chondroma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / cartilagePathology
Disease / condition profile10 min
Hemangioma
Diagnosis-first profile covering hemangioma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / vascular benignPathology
Disease / condition profile10 min
Leiomyosarcoma
Diagnosis-first profile covering leiomyosarcoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / smooth musclePathology
Disease / condition profile10 min
Rhabdomyosarcoma
Diagnosis-first profile covering rhabdomyosarcoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / skeletal musclePathology
Disease / condition profile10 min
Hepatocellular adenoma
Diagnosis-first profile covering hepatocellular adenoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / hepatic benign epithelialPathology
Disease / condition profile10 min
Fibroma
Diagnosis-first profile covering fibroma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / mesenchymal benignPathology
Disease / condition profile10 min
Thyroid follicular adenoma
Diagnosis-first profile covering thyroid follicular adenoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / endocrine benignPathology
Disease / condition profile10 min
Medulloepithelioma
Diagnosis-first profile covering medulloepithelioma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / ocular neuroectodermalPathology
Disease / condition profile10 min
Teratoid medulloepithelioma
Diagnosis-first profile covering teratoid medulloepithelioma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / ocular teratoidPathology
Disease / condition profile10 min
Gas-gland hyperplasia of the swim bladder
Diagnosis-first profile covering gas-gland hyperplasia of the swim bladder, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / preneoplastic swim bladder lesionPathology
Disease / condition profile10 min
Gas-gland adenoma of the swim bladder
Diagnosis-first profile covering gas-gland adenoma of the swim bladder, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / swim bladder benign epithelialPathology
Disease / condition profile10 min
Gas-gland adenocarcinoma of the swim bladder
Diagnosis-first profile covering gas-gland adenocarcinoma of the swim bladder, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / swim bladder malignant epithelialPathology
Disease / condition profile10 min
Mixed hepato-biliary carcinoma
Diagnosis-first profile covering mixed hepato-biliary carcinoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / hepatic mixed epithelialPathology
Disease / condition profile10 min
Hepatic nodular proliferation
Diagnosis-first profile covering hepatic nodular proliferation, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / preneoplastic hepatic lesionPathology
Disease / condition profile10 min
Hemangiopericytoma
Diagnosis-first profile covering hemangiopericytoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / perivascular mesenchymalPathology
Disease / condition profile10 min
Fascial sarcoma
Diagnosis-first profile covering fascial sarcoma, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / mesenchymalPathology
Disease / condition profile10 min
Scale-associated neoplasm
Diagnosis-first profile covering scale-associated neoplasm, its lesion context, look-alikes, evidence limits and confirmation methods.
Fish healthNeoplasia / scale-forming tissuePathology
Symptom differential10 min
Why does my fish have a persistent slow-growing skin lump?
Differential guide for why does my fish have a persistent slow-growing skin lump?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / growth patternMass / growth
Symptom differential10 min
Why does my fish have a rapidly enlarging skin mass?
Differential guide for why does my fish have a rapidly enlarging skin mass?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / growth patternMass / growth
Symptom differential10 min
Why does my fish have an ulcerated skin mass?
Differential guide for why does my fish have an ulcerated skin mass?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / surface changeMass / growth
Symptom differential10 min
Why does my fish have a skin mass that keeps bleeding?
Differential guide for why does my fish have a skin mass that keeps bleeding?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / vascular clueMass / growth
Symptom differential10 min
Why does my fish have a black or dark pigmented mass?
Differential guide for why does my fish have a black or dark pigmented mass?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / pigmentationMass / growth
Symptom differential10 min
Why does my fish have a yellow or orange pigmented mass?
Differential guide for why does my fish have a yellow or orange pigmented mass?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / pigmentationMass / growth
Symptom differential10 min
Why does my fish have a reflective silver or blue mass?
Differential guide for why does my fish have a reflective silver or blue mass?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / chromatophore clueMass / growth
Symptom differential10 min
Why does my fish have a hard fixed mass on a fin?
Differential guide for why does my fish have a hard fixed mass on a fin?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / finMass / growth
Symptom differential10 min
Why does my fish have a soft fleshy mass on a fin?
Differential guide for why does my fish have a soft fleshy mass on a fin?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / finMass / growth
Symptom differential10 min
Why does my fish have a persistent mass at the base of a fin?
Differential guide for why does my fish have a persistent mass at the base of a fin?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / fin baseMass / growth
Symptom differential10 min
Why does my fish have a firm mass on the gill cover?
Differential guide for why does my fish have a firm mass on the gill cover?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / operculumMass / growth
Symptom differential10 min
Why does my fish have a mass visible inside the gill chamber?
Differential guide for why does my fish have a mass visible inside the gill chamber?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / branchialMass / growth
Symptom differential10 min
Why does my fish have a persistent mass at the corner of the mouth?
Differential guide for why does my fish have a persistent mass at the corner of the mouth?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / oralMass / growth
Symptom differential10 min
Why does my fish have a growth inside the mouth?
Differential guide for why does my fish have a growth inside the mouth?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / oralMass / growth
Symptom differential10 min
Why does my fish have a firm mass beneath the lower jaw?
Differential guide for why does my fish have a firm mass beneath the lower jaw?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / gularMass / growth
Symptom differential10 min
Why does my fish have a persistent mass on top of the head?
Differential guide for why does my fish have a persistent mass on top of the head?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / headMass / growth
Symptom differential10 min
Why does my fish have a mass behind the eye?
Differential guide for why does my fish have a mass behind the eye?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / orbitMass / growth
Symptom differential10 min
Why does my fish have an eye displaced by an orbital mass?
Differential guide for why does my fish have an eye displaced by an orbital mass?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / orbitMass / growth
Symptom differential10 min
Why does my fish have a visible mass inside the eye?
Differential guide for why does my fish have a visible mass inside the eye?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / intraocularMass / growth
Symptom differential10 min
Why does my fish have a growth covering part of the pupil?
Differential guide for why does my fish have a growth covering part of the pupil?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / intraocularMass / growth
Symptom differential10 min
Why does my fish have a mass in the nasal opening or olfactory pit?
Differential guide for why does my fish have a mass in the nasal opening or olfactory pit?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / nasalMass / growth
Symptom differential10 min
Why does my fish have a firm one-sided facial mass?
Differential guide for why does my fish have a firm one-sided facial mass?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / facialMass / growth
Symptom differential10 min
Why does my fish have a persistent mass along one side of the body?
Differential guide for why does my fish have a persistent mass along one side of the body?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / body wallMass / growth
Symptom differential10 min
Why does my fish have a persistent mass at the tail base?
Differential guide for why does my fish have a persistent mass at the tail base?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / caudal peduncleMass / growth
Symptom differential10 min
Why does my fish have a firm dorsal-body mass over the spine?
Differential guide for why does my fish have a firm dorsal-body mass over the spine?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / axialMass / growth
Symptom differential10 min
Why does my fish have a persistent mass in the abdominal body wall?
Differential guide for why does my fish have a persistent mass in the abdominal body wall?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / body wallMass / growth
Symptom differential10 min
Why does my fish have a one-sided firm abdominal mass?
Differential guide for why does my fish have a one-sided firm abdominal mass?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / coelomicMass / growth
Symptom differential10 min
Why does my fish have an internal mass visible through the abdomen?
Differential guide for why does my fish have an internal mass visible through the abdomen?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / coelomicMass / growth
Symptom differential10 min
Why does my fish have a persistent mass near the vent or cloaca?
Differential guide for why does my fish have a persistent mass near the vent or cloaca?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / ventMass / growth
Symptom differential10 min
Why does my fish have persistent gonadal-region enlargement in a mature fish?
Differential guide for why does my fish have persistent gonadal-region enlargement in a mature fish?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / reproductiveMass / growth
Symptom differential10 min
Why does my fish have a hard bony mass on the jaw?
Differential guide for why does my fish have a hard bony mass on the jaw?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / boneMass / growth
Symptom differential10 min
Why does my fish have a hard bony mass on a fin ray?
Differential guide for why does my fish have a hard bony mass on a fin ray?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / boneMass / growth
Symptom differential10 min
Why does my fish have multiple persistent skin nodules?
Differential guide for why does my fish have multiple persistent skin nodules?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / multifocalMass / growth
Symptom differential10 min
Why does my fish have a single smooth persistent skin nodule?
Differential guide for why does my fish have a single smooth persistent skin nodule?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / focal skinMass / growth
Symptom differential10 min
Why does my fish have a flat plaque-like skin mass?
Differential guide for why does my fish have a flat plaque-like skin mass?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / surface patternMass / growth
Symptom differential10 min
Why does my fish have a stalked or pedunculated skin growth?
Differential guide for why does my fish have a stalked or pedunculated skin growth?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / surface patternMass / growth
Symptom differential10 min
Why does my fish have a mass that regrows after trauma or partial removal?
Differential guide for why does my fish have a mass that regrows after trauma or partial removal?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / recurrenceMass / growth
Symptom differential10 min
Why does my fish have a mass with changing pigmentation?
Differential guide for why does my fish have a mass with changing pigmentation?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / pigmentationMass / growth
Symptom differential10 min
Why does my fish have a mass that is interfering with swimming?
Differential guide for why does my fish have a mass that is interfering with swimming?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / functional effectMass / growth
Symptom differential10 min
Why does my fish have an oral mass that prevents the mouth closing fully?
Differential guide for why does my fish have an oral mass that prevents the mouth closing fully?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / functional effectMass / growth
Symptom differential10 min
Why does my fish have a branchial mass with reduced movement of one gill cover?
Differential guide for why does my fish have a branchial mass with reduced movement of one gill cover?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / respiratory effectMass / growth
Symptom differential10 min
Why does my fish have a persistent mass with progressive weight loss?
Differential guide for why does my fish have a persistent mass with progressive weight loss?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / systemic effectMass / growth
Symptom differential10 min
Why does my fish have a mass with normal appetite but ongoing body wasting?
Differential guide for why does my fish have a mass with normal appetite but ongoing body wasting?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / systemic effectMass / growth
Symptom differential10 min
Why does my fish have an abdominal mass with new buoyancy problems?
Differential guide for why does my fish have an abdominal mass with new buoyancy problems?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / swim bladder effectMass / growth
Symptom differential10 min
Why does my fish have a mass with persistent bulging of one eye?
Differential guide for why does my fish have a mass with persistent bulging of one eye?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / orbital effectMass / growth
Symptom differential10 min
Why does my fish have a skin mass that lifts or displaces the scales?
Differential guide for why does my fish have a skin mass that lifts or displaces the scales?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / scale displacementMass / growth
Symptom differential10 min
Why does my fish have a mass arising from the edge of the operculum?
Differential guide for why does my fish have a mass arising from the edge of the operculum?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / operculumMass / growth
Symptom differential10 min
Why does my fish have a mass at the base of the dorsal fin?
Differential guide for why does my fish have a mass at the base of the dorsal fin?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / fin baseMass / growth
Symptom differential10 min
Why does my fish have a mass at the pectoral girdle or shoulder?
Differential guide for why does my fish have a mass at the pectoral girdle or shoulder?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / body wallMass / growth
Symptom differential10 min
Why does my fish have slowly progressive body asymmetry caused by a focal mass?
Differential guide for why does my fish have slowly progressive body asymmetry caused by a focal mass?, with location, progression, look-alikes and evidence-led diagnostic next steps.
Fish healthMass / progressive asymmetryMass / growth
Disease / condition profile10 min
Excessive ovarian follicular atresia
Diagnosis-first reproductive pathology profile covering excessive ovarian follicular atresia, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / ovaryReproductive pathology
Disease / condition profile10 min
Pre-ovulatory follicular atresia
Diagnosis-first reproductive pathology profile covering pre-ovulatory follicular atresia, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / ovaryReproductive pathology
Disease / condition profile10 min
Post-ovulatory oocyte degeneration
Diagnosis-first reproductive pathology profile covering post-ovulatory oocyte degeneration, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / ovaryReproductive pathology
Disease / condition profile10 min
Granulomatous oophoritis
Diagnosis-first reproductive pathology profile covering granulomatous oophoritis, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / ovaryReproductive pathology
Disease / condition profile10 min
Ovarian inflammation associated with egg debris
Diagnosis-first reproductive pathology profile covering ovarian inflammation associated with egg debris, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / ovaryReproductive pathology
Disease / condition profile10 min
Oviduct egg-debris retention
Diagnosis-first reproductive pathology profile covering oviduct egg-debris retention, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / oviductReproductive pathology
Disease / condition profile10 min
Ovarian interstitial fibrosis
Diagnosis-first reproductive pathology profile covering ovarian interstitial fibrosis, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / ovaryReproductive pathology
Disease / condition profile10 min
Perifollicular cell hyperplasia of the ovary
Diagnosis-first reproductive pathology profile covering perifollicular cell hyperplasia of the ovary, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / ovaryReproductive pathology
Disease / condition profile10 min
Perifollicular cell hypertrophy of the ovary
Diagnosis-first reproductive pathology profile covering perifollicular cell hypertrophy of the ovary, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / ovaryReproductive pathology
Disease / condition profile10 min
Ovarian interstitial proteinaceous-fluid deposition
Diagnosis-first reproductive pathology profile covering ovarian interstitial proteinaceous-fluid deposition, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / ovaryReproductive pathology
Disease / condition profile10 min
Ovarian degenerative mineralization
Diagnosis-first reproductive pathology profile covering ovarian degenerative mineralization, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / ovaryReproductive pathology
Disease / condition profile10 min
Intra-ovarian fat infiltration
Diagnosis-first reproductive pathology profile covering intra-ovarian fat infiltration, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / ovaryReproductive pathology
Disease / condition profile10 min
Ovarian follicle loss associated with fat overgrowth
Diagnosis-first reproductive pathology profile covering ovarian follicle loss associated with fat overgrowth, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / ovaryReproductive pathology
Disease / condition profile10 min
Ovarian T-cell infiltration
Diagnosis-first reproductive pathology profile covering ovarian t-cell infiltration, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / ovaryReproductive pathology
Disease / condition profile10 min
Ovarian structural disorganization
Diagnosis-first reproductive pathology profile covering ovarian structural disorganization, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / ovaryReproductive pathology
Disease / condition profile10 min
Ovarian vacuolar degeneration
Diagnosis-first reproductive pathology profile covering ovarian vacuolar degeneration, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / ovaryReproductive pathology
Disease / condition profile10 min
Oocyte cytoplasmic retraction
Diagnosis-first reproductive pathology profile covering oocyte cytoplasmic retraction, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / oocyteReproductive pathology
Disease / condition profile10 min
Oocyte karyoplasmic clumping
Diagnosis-first reproductive pathology profile covering oocyte karyoplasmic clumping, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / oocyteReproductive pathology
Disease / condition profile10 min
Oocyte nuclear dissolution
Diagnosis-first reproductive pathology profile covering oocyte nuclear dissolution, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / oocyteReproductive pathology
Disease / condition profile10 min
Oocyte necrosis
Diagnosis-first reproductive pathology profile covering oocyte necrosis, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / oocyteReproductive pathology
Disease / condition profile10 min
Ovigerous lamella degeneration
Diagnosis-first reproductive pathology profile covering ovigerous lamella degeneration, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / ovaryReproductive pathology
Disease / condition profile10 min
Vitellogenic membrane damage
Diagnosis-first reproductive pathology profile covering vitellogenic membrane damage, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / oocyteReproductive pathology
Disease / condition profile10 min
Ovarian wall disruption
Diagnosis-first reproductive pathology profile covering ovarian wall disruption, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / ovaryReproductive pathology
Disease / condition profile10 min
Increased intrafollicular spaces
Diagnosis-first reproductive pathology profile covering increased intrafollicular spaces, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / ovaryReproductive pathology
Disease / condition profile10 min
Reduced vitellogenic oocyte size
Diagnosis-first reproductive pathology profile covering reduced vitellogenic oocyte size, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / ovaryReproductive pathology
Disease / condition profile10 min
Failure of vitellogenic oocyte development
Diagnosis-first reproductive pathology profile covering failure of vitellogenic oocyte development, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / ovaryReproductive pathology
Disease / condition profile10 min
Ovarian regression or retraction
Diagnosis-first reproductive pathology profile covering ovarian regression or retraction, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / ovaryReproductive pathology
Disease / condition profile10 min
Post-ovulatory follicle-wall proliferation
Diagnosis-first reproductive pathology profile covering post-ovulatory follicle-wall proliferation, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / ovaryReproductive pathology
Disease / condition profile10 min
Extrafollicular ovarian tissue proliferation
Diagnosis-first reproductive pathology profile covering extrafollicular ovarian tissue proliferation, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / ovaryReproductive pathology
Disease / condition profile10 min
Follicle-wall hypertrophy around degenerating oocytes
Diagnosis-first reproductive pathology profile covering follicle-wall hypertrophy around degenerating oocytes, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / ovaryReproductive pathology
Disease / condition profile10 min
Intersex ovotestis
Diagnosis-first reproductive pathology profile covering intersex ovotestis, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / gonadReproductive pathology
Disease / condition profile10 min
Testicular oocytes
Diagnosis-first reproductive pathology profile covering testicular oocytes, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / testisReproductive pathology
Disease / condition profile10 min
Testicular interstitial fibrosis
Diagnosis-first reproductive pathology profile covering testicular interstitial fibrosis, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / testisReproductive pathology
Disease / condition profile10 min
Seminiferous tubule-wall fibrosis
Diagnosis-first reproductive pathology profile covering seminiferous tubule-wall fibrosis, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / testisReproductive pathology
Disease / condition profile10 min
Testicular necrosis
Diagnosis-first reproductive pathology profile covering testicular necrosis, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / testisReproductive pathology
Disease / condition profile10 min
Seminiferous tubule necrosis
Diagnosis-first reproductive pathology profile covering seminiferous tubule necrosis, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / testisReproductive pathology
Disease / condition profile10 min
Leydig-cell necrosis
Diagnosis-first reproductive pathology profile covering leydig-cell necrosis, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / testisReproductive pathology
Disease / condition profile10 min
Spermatogenic-cell degeneration
Diagnosis-first reproductive pathology profile covering spermatogenic-cell degeneration, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / testisReproductive pathology
Disease / condition profile10 min
Spermatogenic arrest at the spermatogonial stage
Diagnosis-first reproductive pathology profile covering spermatogenic arrest at the spermatogonial stage, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / testisReproductive pathology
Disease / condition profile10 min
Spermatogenic arrest at the spermatocyte stage
Diagnosis-first reproductive pathology profile covering spermatogenic arrest at the spermatocyte stage, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / testisReproductive pathology
Disease / condition profile10 min
Asynchronous spermatogenesis
Diagnosis-first reproductive pathology profile covering asynchronous spermatogenesis, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / testisReproductive pathology
Disease / condition profile10 min
Enlarged sperm ducts
Diagnosis-first reproductive pathology profile covering enlarged sperm ducts, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / testisReproductive pathology
Disease / condition profile10 min
Testicular basal-membrane detachment
Diagnosis-first reproductive pathology profile covering testicular basal-membrane detachment, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / testisReproductive pathology
Disease / condition profile10 min
Testicular interstitial proteinaceous-fluid deposition
Diagnosis-first reproductive pathology profile covering testicular interstitial proteinaceous-fluid deposition, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / testisReproductive pathology
Disease / condition profile10 min
Testicular lobule deformation
Diagnosis-first reproductive pathology profile covering testicular lobule deformation, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / testisReproductive pathology
Disease / condition profile10 min
Testicular cyst deformation
Diagnosis-first reproductive pathology profile covering testicular cyst deformation, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / testisReproductive pathology
Disease / condition profile10 min
Testicular T-cell infiltration
Diagnosis-first reproductive pathology profile covering testicular t-cell infiltration, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / testisReproductive pathology
Disease / condition profile10 min
Testicular lymphoid-nodule formation
Diagnosis-first reproductive pathology profile covering testicular lymphoid-nodule formation, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / testisReproductive pathology
Disease / condition profile10 min
Testicular regression or retraction
Diagnosis-first reproductive pathology profile covering testicular regression or retraction, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / testisReproductive pathology
Disease / condition profile10 min
Vitellogenin deposition in Sertoli cells
Diagnosis-first reproductive pathology profile covering vitellogenin deposition in sertoli cells, its look-alikes, evidence limits and confirmation methods.
Fish healthReproductive pathology / testisReproductive pathology
Symptom differential10 min
What can cause spawning frequency that suddenly becomes much higher than the pair’s normal pattern?
Breeding and reproductive differential for what can cause spawning frequency that suddenly becomes much higher than the pair’s normal pattern?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / spawning frequencyBreeding
Symptom differential10 min
What can cause a mature female that becomes swollen but releases no eggs?
Breeding and reproductive differential for what can cause a mature female that becomes swollen but releases no eggs?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / egg releaseBreeding
Symptom differential10 min
What can cause a fish that repeatedly goes through spawning behaviour without eggs being released?
Breeding and reproductive differential for what can cause a fish that repeatedly goes through spawning behaviour without eggs being released?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / spawning failureBreeding
Symptom differential10 min
What can cause a female that looks in breeding condition but stops spawning?
Breeding and reproductive differential for what can cause a female that looks in breeding condition but stops spawning?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / spawning failureBreeding
Symptom differential10 min
What can cause a mature male that stops producing visible milt during breeding attempts?
Breeding and reproductive differential for what can cause a mature male that stops producing visible milt during breeding attempts?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / male fertilityBreeding
Symptom differential10 min
What can cause spawning behaviour without any eggs or milt being released?
Breeding and reproductive differential for what can cause spawning behaviour without any eggs or milt being released?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / gamete releaseBreeding
Symptom differential10 min
What can cause suspected eggs retained after a spawning attempt?
Breeding and reproductive differential for what can cause suspected eggs retained after a spawning attempt?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / egg retentionBreeding
Symptom differential10 min
What can cause a swollen vent before spawning?
Breeding and reproductive differential for what can cause a swollen vent before spawning?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / vent changeBreeding
Symptom differential10 min
What can cause spawning cycles that become irregular after previously being predictable?
Breeding and reproductive differential for what can cause spawning cycles that become irregular after previously being predictable?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / cycle timingBreeding
Symptom differential10 min
What can cause a red or irritated vent during breeding?
Breeding and reproductive differential for what can cause a red or irritated vent during breeding?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / vent irritationBreeding
Symptom differential10 min
What can cause eggs being released before normal courtship is completed?
Breeding and reproductive differential for what can cause eggs being released before normal courtship is completed?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / spawning timingBreeding
Symptom differential10 min
What can cause repeated egg scattering with no apparent fertilisation?
Breeding and reproductive differential for what can cause repeated egg scattering with no apparent fertilisation?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / fertilisationBreeding
Symptom differential10 min
What can cause a clutch containing many unusually small or underdeveloped eggs?
Breeding and reproductive differential for what can cause a clutch containing many unusually small or underdeveloped eggs?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / egg qualityBreeding
Symptom differential10 min
What can cause eggs that are released but collapse or deteriorate quickly?
Breeding and reproductive differential for what can cause eggs that are released but collapse or deteriorate quickly?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / egg qualityBreeding
Symptom differential10 min
What can cause an unusually small clutch compared with previous spawns?
Breeding and reproductive differential for what can cause an unusually small clutch compared with previous spawns?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / fecundityBreeding
Symptom differential10 min
What can cause clutch size that keeps declining over successive spawns?
Breeding and reproductive differential for what can cause clutch size that keeps declining over successive spawns?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / fecundityBreeding
Symptom differential10 min
What can cause a female that progressively loses body condition during repeated spawning cycles?
Breeding and reproductive differential for what can cause a female that progressively loses body condition during repeated spawning cycles?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / body conditionBreeding
Symptom differential10 min
What can cause a female that refuses food before an expected spawning event?
Breeding and reproductive differential for what can cause a female that refuses food before an expected spawning event?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / appetiteBreeding
Symptom differential10 min
What can cause a breeding female taking progressively longer to recover after each spawn?
Breeding and reproductive differential for what can cause a breeding female taking progressively longer to recover after each spawn?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / recovery trendBreeding
Symptom differential10 min
What can cause one-sided abdominal swelling in a mature female?
Breeding and reproductive differential for what can cause one-sided abdominal swelling in a mature female?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / abdominal asymmetryBreeding
Symptom differential10 min
What can cause a firm abdominal swelling in the ovarian region?
Breeding and reproductive differential for what can cause a firm abdominal swelling in the ovarian region?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / abdominal massBreeding
Symptom differential10 min
What can cause a soft abdominal swelling in the ovarian region?
Breeding and reproductive differential for what can cause a soft abdominal swelling in the ovarian region?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / abdominal swellingBreeding
Symptom differential10 min
What can cause female breeding condition that persists much longer than the pair’s usual cycle?
Breeding and reproductive differential for what can cause female breeding condition that persists much longer than the pair’s usual cycle?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / cycle durationBreeding
Symptom differential10 min
What can cause an unexpectedly enlarged abdomen in a mature male?
Breeding and reproductive differential for what can cause an unexpectedly enlarged abdomen in a mature male?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / male abdominal swellingBreeding
Symptom differential10 min
What can cause an enlarged male vent with no milt released?
Breeding and reproductive differential for what can cause an enlarged male vent with no milt released?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / male fertilityBreeding
Symptom differential10 min
What can cause a fish developing mixed male and female sex characteristics?
Breeding and reproductive differential for what can cause a fish developing mixed male and female sex characteristics?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / intersex clueBreeding
Symptom differential10 min
What can cause a mature male developing female-like body or gonadal characteristics?
Breeding and reproductive differential for what can cause a mature male developing female-like body or gonadal characteristics?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / sex differentiationBreeding
Symptom differential10 min
What can cause a mature female developing male-like secondary sex traits?
Breeding and reproductive differential for what can cause a mature female developing male-like secondary sex traits?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / sex differentiationBreeding
Symptom differential10 min
What can cause normal breeding colour changes followed by repeated spawning failure?
Breeding and reproductive differential for what can cause normal breeding colour changes followed by repeated spawning failure?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / spawning failureBreeding
Symptom differential10 min
What can cause repeated courtship without the pair completing a spawn?
Breeding and reproductive differential for what can cause repeated courtship without the pair completing a spawn?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / courtship failureBreeding
Symptom differential10 min
What can cause a mature fish that never develops expected breeding condition?
Breeding and reproductive differential for what can cause a mature fish that never develops expected breeding condition?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / maturationBreeding
Symptom differential10 min
What can cause spawning that stops after a change in source water?
Breeding and reproductive differential for what can cause spawning that stops after a change in source water?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / environmental changeBreeding
Symptom differential10 min
What can cause spawning that stops after a medication course?
Breeding and reproductive differential for what can cause spawning that stops after a medication course?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / timelineBreeding
Symptom differential10 min
What can cause spawning that stops after fish are moved to a new tank?
Breeding and reproductive differential for what can cause spawning that stops after fish are moved to a new tank?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / stress timelineBreeding
Symptom differential10 min
What can cause spawning that stops after a significant temperature change?
Breeding and reproductive differential for what can cause spawning that stops after a significant temperature change?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / environmental changeBreeding
Symptom differential10 min
What can cause spawning that stops after a major diet change?
Breeding and reproductive differential for what can cause spawning that stops after a major diet change?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / nutrition timelineBreeding
Symptom differential10 min
What can cause persistent infertility despite apparently normal spawning behaviour?
Breeding and reproductive differential for what can cause persistent infertility despite apparently normal spawning behaviour?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / infertilityBreeding
Symptom differential10 min
What can cause a persistently low fertilisation rate in otherwise normal-looking eggs?
Breeding and reproductive differential for what can cause a persistently low fertilisation rate in otherwise normal-looking eggs?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / fertilisationBreeding
Symptom differential10 min
What can cause apparently normal fertilisation followed by a persistently low hatch rate?
Breeding and reproductive differential for what can cause apparently normal fertilisation followed by a persistently low hatch rate?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / hatch successBreeding
Symptom differential10 min
What can cause an unusually high rate of malformed embryos or hatchlings?
Breeding and reproductive differential for what can cause an unusually high rate of malformed embryos or hatchlings?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / embryo qualityBreeding
Symptom differential10 min
What can cause fry output that falls despite apparently normal spawning?
Breeding and reproductive differential for what can cause fry output that falls despite apparently normal spawning?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / reproductive outputBreeding
Symptom differential10 min
What can cause a female whose abdomen shrinks without an observed spawning event?
Breeding and reproductive differential for what can cause a female whose abdomen shrinks without an observed spawning event?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / ovarian regressionBreeding
Symptom differential10 min
What can cause an irregular abdominal outline in a mature female?
Breeding and reproductive differential for what can cause an irregular abdominal outline in a mature female?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / abdominal asymmetryBreeding
Symptom differential10 min
What can cause the interval between successful spawns becoming progressively longer?
Breeding and reproductive differential for what can cause the interval between successful spawns becoming progressively longer?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / cycle intervalBreeding
Symptom differential10 min
What can cause a previously reliable breeding pair repeatedly skipping expected spawning cycles?
Breeding and reproductive differential for what can cause a previously reliable breeding pair repeatedly skipping expected spawning cycles?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / skipped cyclesBreeding
Symptom differential10 min
What can cause eggs being released in several unusually small batches instead of the pair’s normal spawning pattern?
Breeding and reproductive differential for what can cause eggs being released in several unusually small batches instead of the pair’s normal spawning pattern?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / egg release patternBreeding
Symptom differential10 min
What can cause a female that appears gravid then loses swelling without an observed spawn?
Breeding and reproductive differential for what can cause a female that appears gravid then loses swelling without an observed spawn?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / follicular regressionBreeding
Symptom differential10 min
What can cause a mature pair that spawns repeatedly but never produces viable fry?
Breeding and reproductive differential for what can cause a mature pair that spawns repeatedly but never produces viable fry?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / infertilityBreeding
Symptom differential10 min
What can cause normal male breeding behaviour while eggs remain consistently unfertilised?
Breeding and reproductive differential for what can cause normal male breeding behaviour while eggs remain consistently unfertilised?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / male fertilityBreeding
Symptom differential10 min
What can cause normal female breeding behaviour but consistently poor egg viability?
Breeding and reproductive differential for what can cause normal female breeding behaviour but consistently poor egg viability?, with husbandry checks, look-alikes and diagnostic next steps.
Fish healthBreeding / female fertilityBreeding
Disease / condition profile10 min
Hepatocellular intracytoplasmic vacuolation
Diagnosis-first internal-organ pathology profile covering hepatocellular intracytoplasmic vacuolation, look-alikes, evidence limits and confirmation.
Fish healthLiver pathology / hepatocyteOrgan pathology
Disease / condition profile10 min
Hepatocellular necrosis
Diagnosis-first internal-organ pathology profile covering hepatocellular necrosis, look-alikes, evidence limits and confirmation.
Fish healthLiver pathology / hepatocyteOrgan pathology
Disease / condition profile10 min
Spongiosis hepatis
Diagnosis-first internal-organ pathology profile covering spongiosis hepatis, look-alikes, evidence limits and confirmation.
Fish healthLiver pathology / hepatic stromaOrgan pathology
Disease / condition profile10 min
Non-parasitic hepatic cyst formation
Diagnosis-first internal-organ pathology profile covering non-parasitic hepatic cyst formation, look-alikes, evidence limits and confirmation.
Fish healthLiver pathology / cystic lesionOrgan pathology
Disease / condition profile10 min
Hepatocellular hyalinization
Diagnosis-first internal-organ pathology profile covering hepatocellular hyalinization, look-alikes, evidence limits and confirmation.
Fish healthLiver pathology / hepatocyteOrgan pathology
Disease / condition profile10 min
Hepatic granulomatous inflammation
Diagnosis-first internal-organ pathology profile covering hepatic granulomatous inflammation, look-alikes, evidence limits and confirmation.
Fish healthLiver pathology / inflammationOrgan pathology
Disease / condition profile10 min
Chronic hepatic inflammation
Diagnosis-first internal-organ pathology profile covering chronic hepatic inflammation, look-alikes, evidence limits and confirmation.
Fish healthLiver pathology / inflammationOrgan pathology
Disease / condition profile10 min
Hepatic macrophage-aggregate hyperplasia
Diagnosis-first internal-organ pathology profile covering hepatic macrophage-aggregate hyperplasia, look-alikes, evidence limits and confirmation.
Fish healthLiver pathology / macrophage responseOrgan pathology
Disease / condition profile10 min
Focal hepatic lymphocytic infiltration
Diagnosis-first internal-organ pathology profile covering focal hepatic lymphocytic infiltration, look-alikes, evidence limits and confirmation.
Fish healthLiver pathology / inflammationOrgan pathology
Disease / condition profile10 min
Basophilic focus of hepatic cellular alteration
Diagnosis-first internal-organ pathology profile covering basophilic focus of hepatic cellular alteration, look-alikes, evidence limits and confirmation.
Fish healthLiver pathology / preneoplastic focusOrgan pathology
Disease / condition profile10 min
Eosinophilic focus of hepatic cellular alteration
Diagnosis-first internal-organ pathology profile covering eosinophilic focus of hepatic cellular alteration, look-alikes, evidence limits and confirmation.
Fish healthLiver pathology / preneoplastic focusOrgan pathology
Disease / condition profile10 min
Vacuolated focus of hepatic cellular alteration
Diagnosis-first internal-organ pathology profile covering vacuolated focus of hepatic cellular alteration, look-alikes, evidence limits and confirmation.
Fish healthLiver pathology / preneoplastic focusOrgan pathology
Disease / condition profile10 min
Clear-cell focus of hepatic cellular alteration
Diagnosis-first internal-organ pathology profile covering clear-cell focus of hepatic cellular alteration, look-alikes, evidence limits and confirmation.
Fish healthLiver pathology / preneoplastic focusOrgan pathology
Disease / condition profile10 min
Bile-duct hyperplasia
Diagnosis-first internal-organ pathology profile covering bile-duct hyperplasia, look-alikes, evidence limits and confirmation.
Fish healthLiver pathology / biliary tractOrgan pathology
Disease / condition profile10 min
Cholangiitis in fish
Diagnosis-first internal-organ pathology profile covering cholangiitis in fish, look-alikes, evidence limits and confirmation.
Fish healthLiver pathology / biliary inflammationOrgan pathology
Disease / condition profile10 min
Pericholangiitis in fish
Diagnosis-first internal-organ pathology profile covering pericholangiitis in fish, look-alikes, evidence limits and confirmation.
Fish healthLiver pathology / biliary inflammationOrgan pathology
Disease / condition profile10 min
Pericholangial fibrosis
Diagnosis-first internal-organ pathology profile covering pericholangial fibrosis, look-alikes, evidence limits and confirmation.
Fish healthLiver pathology / biliary fibrosisOrgan pathology
Disease / condition profile10 min
Focal coagulative hepatic necrosis
Diagnosis-first internal-organ pathology profile covering focal coagulative hepatic necrosis, look-alikes, evidence limits and confirmation.
Fish healthLiver pathology / focal necrosisOrgan pathology
Disease / condition profile10 min
Hepatocellular cholesterol-crystal accumulation
Diagnosis-first internal-organ pathology profile covering hepatocellular cholesterol-crystal accumulation, look-alikes, evidence limits and confirmation.
Fish healthLiver pathology / cellular inclusionsOrgan pathology
Disease / condition profile10 min
Hepatic sinusoidal dilation
Diagnosis-first internal-organ pathology profile covering hepatic sinusoidal dilation, look-alikes, evidence limits and confirmation.
Fish healthLiver pathology / circulationOrgan pathology
Disease / condition profile10 min
Hepatic erythrocytic infiltration
Diagnosis-first internal-organ pathology profile covering hepatic erythrocytic infiltration, look-alikes, evidence limits and confirmation.
Fish healthLiver pathology / circulationOrgan pathology
Disease / condition profile10 min
Hepatic glycogen depletion
Diagnosis-first internal-organ pathology profile covering hepatic glycogen depletion, look-alikes, evidence limits and confirmation.
Fish healthLiver pathology / metabolismOrgan pathology
Disease / condition profile10 min
Hepatocyte rough-endoplasmic-reticulum fragmentation
Diagnosis-first internal-organ pathology profile covering hepatocyte rough-endoplasmic-reticulum fragmentation, look-alikes, evidence limits and confirmation.
Fish healthLiver pathology / ultrastructureOrgan pathology
Disease / condition profile10 min
Atypical mitochondrial proliferation in hepatocytes
Diagnosis-first internal-organ pathology profile covering atypical mitochondrial proliferation in hepatocytes, look-alikes, evidence limits and confirmation.
Fish healthLiver pathology / ultrastructureOrgan pathology
Disease / condition profile10 min
Hepatocellular myelin-whorl accumulation
Diagnosis-first internal-organ pathology profile covering hepatocellular myelin-whorl accumulation, look-alikes, evidence limits and confirmation.
Fish healthLiver pathology / ultrastructureOrgan pathology
Disease / condition profile10 min
Renal tubular epithelial degeneration
Diagnosis-first internal-organ pathology profile covering renal tubular epithelial degeneration, look-alikes, evidence limits and confirmation.
Fish healthKidney pathology / renal tubuleOrgan pathology
Disease / condition profile10 min
Renal tubular necrosis
Diagnosis-first internal-organ pathology profile covering renal tubular necrosis, look-alikes, evidence limits and confirmation.
Fish healthKidney pathology / renal tubuleOrgan pathology
Disease / condition profile10 min
Renal tubular atrophy
Diagnosis-first internal-organ pathology profile covering renal tubular atrophy, look-alikes, evidence limits and confirmation.
Fish healthKidney pathology / renal tubuleOrgan pathology
Disease / condition profile10 min
Renal tubular regeneration
Diagnosis-first internal-organ pathology profile covering renal tubular regeneration, look-alikes, evidence limits and confirmation.
Fish healthKidney pathology / renal tubuleOrgan pathology
Disease / condition profile10 min
Renal tubular obstruction
Diagnosis-first internal-organ pathology profile covering renal tubular obstruction, look-alikes, evidence limits and confirmation.
Fish healthKidney pathology / renal tubuleOrgan pathology
Disease / condition profile10 min
Renal tubular lumen narrowing
Diagnosis-first internal-organ pathology profile covering renal tubular lumen narrowing, look-alikes, evidence limits and confirmation.
Fish healthKidney pathology / renal tubuleOrgan pathology
Disease / condition profile10 min
Renal tubular epithelial hypertrophy
Diagnosis-first internal-organ pathology profile covering renal tubular epithelial hypertrophy, look-alikes, evidence limits and confirmation.
Fish healthKidney pathology / renal tubuleOrgan pathology
Disease / condition profile10 min
Renal tubular epithelial vacuolation
Diagnosis-first internal-organ pathology profile covering renal tubular epithelial vacuolation, look-alikes, evidence limits and confirmation.
Fish healthKidney pathology / renal tubuleOrgan pathology
Disease / condition profile10 min
Renal tubular epithelial degranulation
Diagnosis-first internal-organ pathology profile covering renal tubular epithelial degranulation, look-alikes, evidence limits and confirmation.
Fish healthKidney pathology / renal tubuleOrgan pathology
Disease / condition profile10 min
Glomerular shrinkage
Diagnosis-first internal-organ pathology profile covering glomerular shrinkage, look-alikes, evidence limits and confirmation.
Fish healthKidney pathology / glomerulusOrgan pathology
Disease / condition profile10 min
Glomerular expansion
Diagnosis-first internal-organ pathology profile covering glomerular expansion, look-alikes, evidence limits and confirmation.
Fish healthKidney pathology / glomerulusOrgan pathology
Disease / condition profile10 min
Glomerular necrosis
Diagnosis-first internal-organ pathology profile covering glomerular necrosis, look-alikes, evidence limits and confirmation.
Fish healthKidney pathology / glomerulusOrgan pathology
Disease / condition profile10 min
Glomerulonephritis in fish
Diagnosis-first internal-organ pathology profile covering glomerulonephritis in fish, look-alikes, evidence limits and confirmation.
Fish healthKidney pathology / glomerulusOrgan pathology
Disease / condition profile10 min
Glomerular capillary dilation
Diagnosis-first internal-organ pathology profile covering glomerular capillary dilation, look-alikes, evidence limits and confirmation.
Fish healthKidney pathology / glomerulusOrgan pathology
Disease / condition profile10 min
Loss of Bowman’s space
Diagnosis-first internal-organ pathology profile covering loss of bowman’s space, look-alikes, evidence limits and confirmation.
Fish healthKidney pathology / glomerulusOrgan pathology
Disease / condition profile10 min
Renal interstitial hyalinization
Diagnosis-first internal-organ pathology profile covering renal interstitial hyalinization, look-alikes, evidence limits and confirmation.
Fish healthKidney pathology / interstitiumOrgan pathology
Disease / condition profile10 min
Renal interstitial necrosis
Diagnosis-first internal-organ pathology profile covering renal interstitial necrosis, look-alikes, evidence limits and confirmation.
Fish healthKidney pathology / interstitiumOrgan pathology
Disease / condition profile10 min
Renal hyperaemia
Diagnosis-first internal-organ pathology profile covering renal hyperaemia, look-alikes, evidence limits and confirmation.
Fish healthKidney pathology / circulationOrgan pathology
Disease / condition profile10 min
Pyknosis in renal haematopoietic tissue
Diagnosis-first internal-organ pathology profile covering pyknosis in renal haematopoietic tissue, look-alikes, evidence limits and confirmation.
Fish healthKidney pathology / haematopoietic tissueOrgan pathology
Disease / condition profile10 min
Renal haematopoietic tissue proliferation
Diagnosis-first internal-organ pathology profile covering renal haematopoietic tissue proliferation, look-alikes, evidence limits and confirmation.
Fish healthKidney pathology / haematopoietic tissueOrgan pathology
Disease / condition profile10 min
Renal cortex shrinkage
Diagnosis-first internal-organ pathology profile covering renal cortex shrinkage, look-alikes, evidence limits and confirmation.
Fish healthKidney pathology / renal architectureOrgan pathology
Disease / condition profile10 min
Destructive renal tubular change
Diagnosis-first internal-organ pathology profile covering destructive renal tubular change, look-alikes, evidence limits and confirmation.
Fish healthKidney pathology / renal tubuleOrgan pathology
Disease / condition profile10 min
Renal tubular brush-border disruption
Diagnosis-first internal-organ pathology profile covering renal tubular brush-border disruption, look-alikes, evidence limits and confirmation.
Fish healthKidney pathology / renal tubule ultrastructureOrgan pathology
Disease / condition profile10 min
Giant lysosomes in renal tubular cells
Diagnosis-first internal-organ pathology profile covering giant lysosomes in renal tubular cells, look-alikes, evidence limits and confirmation.
Fish healthKidney pathology / renal tubule ultrastructureOrgan pathology
Disease / condition profile10 min
Atypical mitochondria in renal tubular cells
Diagnosis-first internal-organ pathology profile covering atypical mitochondria in renal tubular cells, look-alikes, evidence limits and confirmation.
Fish healthKidney pathology / renal tubule ultrastructureOrgan pathology
Symptom differential10 min
What can cause a pale liver seen during a fish necropsy?
Post-mortem differential for what can cause a pale liver seen during a fish necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / liverNecropsy
Symptom differential10 min
What can cause an unusually dark liver seen during a fish necropsy?
Post-mortem differential for what can cause an unusually dark liver seen during a fish necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / liverNecropsy
Symptom differential10 min
What can cause a yellow or tan liver seen during a fish necropsy?
Post-mortem differential for what can cause a yellow or tan liver seen during a fish necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / liverNecropsy
Symptom differential10 min
What can cause a mottled or patchy liver seen during a fish necropsy?
Post-mortem differential for what can cause a mottled or patchy liver seen during a fish necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / liverNecropsy
Symptom differential10 min
What can cause an enlarged liver seen during a fish necropsy?
Post-mortem differential for what can cause an enlarged liver seen during a fish necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / liverNecropsy
Symptom differential10 min
What can cause an unusually small liver seen during a fish necropsy?
Post-mortem differential for what can cause an unusually small liver seen during a fish necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / liverNecropsy
Symptom differential10 min
What can cause a firm liver seen during a fish necropsy?
Post-mortem differential for what can cause a firm liver seen during a fish necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / liverNecropsy
Symptom differential10 min
What can cause a fragile or friable liver seen during a fish necropsy?
Post-mortem differential for what can cause a fragile or friable liver seen during a fish necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / liverNecropsy
Symptom differential10 min
What can cause white spots or pale foci in the liver at necropsy?
Post-mortem differential for what can cause white spots or pale foci in the liver at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / liverNecropsy
Symptom differential10 min
What can cause red foci or haemorrhagic-looking areas in the liver at necropsy?
Post-mortem differential for what can cause red foci or haemorrhagic-looking areas in the liver at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / liverNecropsy
Symptom differential10 min
What can cause one or more liver nodules seen at necropsy?
Post-mortem differential for what can cause one or more liver nodules seen at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / liverNecropsy
Symptom differential10 min
What can cause a cyst-like or fluid-filled space in the liver at necropsy?
Post-mortem differential for what can cause a cyst-like or fluid-filled space in the liver at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / liverNecropsy
Symptom differential10 min
What can cause a gritty or mineral-like focus in the liver at necropsy?
Post-mortem differential for what can cause a gritty or mineral-like focus in the liver at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / liverNecropsy
Symptom differential10 min
What can cause prominent or thickened bile-duct-like structures in the liver at necropsy?
Post-mortem differential for what can cause prominent or thickened bile-duct-like structures in the liver at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / liverNecropsy
Symptom differential10 min
What can cause green bile-like staining around the liver at necropsy?
Post-mortem differential for what can cause green bile-like staining around the liver at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / hepatobiliaryNecropsy
Symptom differential10 min
What can cause a liver that appears stuck or adhered to nearby organs at necropsy?
Post-mortem differential for what can cause a liver that appears stuck or adhered to nearby organs at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / liverNecropsy
Symptom differential10 min
What can cause a rough or irregular liver surface at necropsy?
Post-mortem differential for what can cause a rough or irregular liver surface at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / liverNecropsy
Symptom differential10 min
What can cause a pale vacuolated or foamy-looking liver at necropsy?
Post-mortem differential for what can cause a pale vacuolated or foamy-looking liver at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / liverNecropsy
Symptom differential10 min
What can cause a single pale focus in the liver at necropsy?
Post-mortem differential for what can cause a single pale focus in the liver at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / liverNecropsy
Symptom differential10 min
What can cause multiple pale foci in the liver at necropsy?
Post-mortem differential for what can cause multiple pale foci in the liver at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / liverNecropsy
Symptom differential10 min
What can cause a congested or blood-filled liver at necropsy?
Post-mortem differential for what can cause a congested or blood-filled liver at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / liver circulationNecropsy
Symptom differential10 min
What can cause liver tissue that breaks apart unusually easily during necropsy?
Post-mortem differential for what can cause liver tissue that breaks apart unusually easily during necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / liverNecropsy
Symptom differential10 min
What can cause an abnormal-looking liver after sudden unexplained fish death?
Post-mortem differential for what can cause an abnormal-looking liver after sudden unexplained fish death?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / liverNecropsy
Symptom differential10 min
What can cause similar liver abnormalities in several fish from the same aquarium?
Post-mortem differential for what can cause similar liver abnormalities in several fish from the same aquarium?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / shared exposureNecropsy
Symptom differential10 min
What can cause a normal-looking liver despite severe illness before death?
Post-mortem differential for what can cause a normal-looking liver despite severe illness before death?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / evidence limitsNecropsy
Symptom differential10 min
What can cause an enlarged kidney seen during a fish necropsy?
Post-mortem differential for what can cause an enlarged kidney seen during a fish necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / kidneyNecropsy
Symptom differential10 min
What can cause a pale kidney seen during a fish necropsy?
Post-mortem differential for what can cause a pale kidney seen during a fish necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / kidneyNecropsy
Symptom differential10 min
What can cause an unusually dark kidney seen during a fish necropsy?
Post-mortem differential for what can cause an unusually dark kidney seen during a fish necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / kidneyNecropsy
Symptom differential10 min
What can cause a swollen kidney seen during a fish necropsy?
Post-mortem differential for what can cause a swollen kidney seen during a fish necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / kidneyNecropsy
Symptom differential10 min
What can cause a small or shrunken kidney seen during a fish necropsy?
Post-mortem differential for what can cause a small or shrunken kidney seen during a fish necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / kidneyNecropsy
Symptom differential10 min
What can cause white spots or pale foci in the kidney at necropsy?
Post-mortem differential for what can cause white spots or pale foci in the kidney at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / kidneyNecropsy
Symptom differential10 min
What can cause red or congested-looking foci in the kidney at necropsy?
Post-mortem differential for what can cause red or congested-looking foci in the kidney at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / kidneyNecropsy
Symptom differential10 min
What can cause gritty or mineral-like deposits in the kidney at necropsy?
Post-mortem differential for what can cause gritty or mineral-like deposits in the kidney at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / kidneyNecropsy
Symptom differential10 min
What can cause unusually prominent tubular structures in the kidney at necropsy?
Post-mortem differential for what can cause unusually prominent tubular structures in the kidney at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / kidneyNecropsy
Symptom differential10 min
What can cause a soft or friable kidney at necropsy?
Post-mortem differential for what can cause a soft or friable kidney at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / kidneyNecropsy
Symptom differential10 min
What can cause an unusually firm kidney at necropsy?
Post-mortem differential for what can cause an unusually firm kidney at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / kidneyNecropsy
Symptom differential10 min
What can cause an irregular kidney surface at necropsy?
Post-mortem differential for what can cause an irregular kidney surface at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / kidneyNecropsy
Symptom differential10 min
What can cause cyst-like spaces in the kidney at necropsy?
Post-mortem differential for what can cause cyst-like spaces in the kidney at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / kidneyNecropsy
Symptom differential10 min
What can cause multiple nodules in the kidney at necropsy?
Post-mortem differential for what can cause multiple nodules in the kidney at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / kidneyNecropsy
Symptom differential10 min
What can cause a single kidney-region mass found at necropsy?
Post-mortem differential for what can cause a single kidney-region mass found at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / kidneyNecropsy
Symptom differential10 min
What can cause a very congested or blood-filled kidney at necropsy?
Post-mortem differential for what can cause a very congested or blood-filled kidney at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / kidney circulationNecropsy
Symptom differential10 min
What can cause an abnormal-looking kidney after chronic wasting or weight loss?
Post-mortem differential for what can cause an abnormal-looking kidney after chronic wasting or weight loss?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / kidneyNecropsy
Symptom differential10 min
What can cause an abnormal-looking kidney after a fish showed generalised swelling or raised scales?
Post-mortem differential for what can cause an abnormal-looking kidney after a fish showed generalised swelling or raised scales?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / kidneyNecropsy
Symptom differential10 min
What can cause kidney abnormalities after a long-term water-quality problem?
Post-mortem differential for what can cause kidney abnormalities after a long-term water-quality problem?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / shared exposureNecropsy
Symptom differential10 min
What can cause similar kidney abnormalities in several fish from the same aquarium?
Post-mortem differential for what can cause similar kidney abnormalities in several fish from the same aquarium?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / shared exposureNecropsy
Symptom differential10 min
What can cause a normal-looking kidney despite severe swelling before death?
Post-mortem differential for what can cause a normal-looking kidney despite severe swelling before death?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / evidence limitsNecropsy
Symptom differential10 min
What can cause both the kidney and liver looking abnormal at necropsy?
Post-mortem differential for what can cause both the kidney and liver looking abnormal at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / multi-organNecropsy
Symptom differential10 min
What can cause an abnormal-looking kidney after sudden unexplained fish death?
Post-mortem differential for what can cause an abnormal-looking kidney after sudden unexplained fish death?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / kidneyNecropsy
Symptom differential10 min
What can cause kidney abnormalities after a suspected chemical exposure?
Post-mortem differential for what can cause kidney abnormalities after a suspected chemical exposure?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / toxicologyNecropsy
Symptom differential10 min
What can cause difficulty telling normal post-mortem kidney change from a true lesion?
Post-mortem differential for what can cause difficulty telling normal post-mortem kidney change from a true lesion?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / evidence limitsNecropsy
Disease / condition profile10 min
Myocardial necrosis
Diagnosis-first internal-organ pathology profile covering myocardial necrosis, look-alikes, evidence limits and confirmation.
Fish healthHeart pathology / myocardiumOrgan pathology
Disease / condition profile10 min
Myocardial degeneration
Diagnosis-first internal-organ pathology profile covering myocardial degeneration, look-alikes, evidence limits and confirmation.
Fish healthHeart pathology / myocardiumOrgan pathology
Disease / condition profile10 min
Myocardial fibrosis
Diagnosis-first internal-organ pathology profile covering myocardial fibrosis, look-alikes, evidence limits and confirmation.
Fish healthHeart pathology / myocardiumOrgan pathology
Disease / condition profile10 min
Myocardial oedema
Diagnosis-first internal-organ pathology profile covering myocardial oedema, look-alikes, evidence limits and confirmation.
Fish healthHeart pathology / myocardiumOrgan pathology
Disease / condition profile10 min
Epicarditis
Diagnosis-first internal-organ pathology profile covering epicarditis, look-alikes, evidence limits and confirmation.
Fish healthHeart pathology / epicardiumOrgan pathology
Disease / condition profile10 min
Pericarditis
Diagnosis-first internal-organ pathology profile covering pericarditis, look-alikes, evidence limits and confirmation.
Fish healthHeart pathology / pericardiumOrgan pathology
Disease / condition profile10 min
Endocarditis
Diagnosis-first internal-organ pathology profile covering endocarditis, look-alikes, evidence limits and confirmation.
Fish healthHeart pathology / endocardiumOrgan pathology
Disease / condition profile10 min
Epicardial oedema
Diagnosis-first internal-organ pathology profile covering epicardial oedema, look-alikes, evidence limits and confirmation.
Fish healthHeart pathology / epicardiumOrgan pathology
Disease / condition profile10 min
Epicardial haemorrhage
Diagnosis-first internal-organ pathology profile covering epicardial haemorrhage, look-alikes, evidence limits and confirmation.
Fish healthHeart pathology / epicardiumOrgan pathology
Disease / condition profile10 min
Pericardial fibrin deposition
Diagnosis-first internal-organ pathology profile covering pericardial fibrin deposition, look-alikes, evidence limits and confirmation.
Fish healthHeart pathology / pericardial cavityOrgan pathology
Disease / condition profile10 min
Epicardial fibrin deposition
Diagnosis-first internal-organ pathology profile covering epicardial fibrin deposition, look-alikes, evidence limits and confirmation.
Fish healthHeart pathology / epicardiumOrgan pathology
Disease / condition profile10 min
Pericardial–epicardial adhesion
Diagnosis-first internal-organ pathology profile covering pericardial–epicardial adhesion, look-alikes, evidence limits and confirmation.
Fish healthHeart pathology / serosal adhesionOrgan pathology
Disease / condition profile10 min
Coronary vessel degeneration
Diagnosis-first internal-organ pathology profile covering coronary vessel degeneration, look-alikes, evidence limits and confirmation.
Fish healthHeart pathology / coronary vesselOrgan pathology
Disease / condition profile10 min
Coronary intimal thickening
Diagnosis-first internal-organ pathology profile covering coronary intimal thickening, look-alikes, evidence limits and confirmation.
Fish healthHeart pathology / coronary arteryOrgan pathology
Disease / condition profile10 min
Coronary myointimal hyperplasia
Diagnosis-first internal-organ pathology profile covering coronary myointimal hyperplasia, look-alikes, evidence limits and confirmation.
Fish healthHeart pathology / coronary arteryOrgan pathology
Disease / condition profile10 min
Coronary elastic-lamina disruption
Diagnosis-first internal-organ pathology profile covering coronary elastic-lamina disruption, look-alikes, evidence limits and confirmation.
Fish healthHeart pathology / coronary arteryOrgan pathology
Disease / condition profile10 min
Coronary medial fibrosis
Diagnosis-first internal-organ pathology profile covering coronary medial fibrosis, look-alikes, evidence limits and confirmation.
Fish healthHeart pathology / coronary arteryOrgan pathology
Disease / condition profile10 min
Coronary medial vacuolation
Diagnosis-first internal-organ pathology profile covering coronary medial vacuolation, look-alikes, evidence limits and confirmation.
Fish healthHeart pathology / coronary arteryOrgan pathology
Disease / condition profile10 min
Cardiac embolic lesion
Diagnosis-first internal-organ pathology profile covering cardiac embolic lesion, look-alikes, evidence limits and confirmation.
Fish healthHeart pathology / circulationOrgan pathology
Disease / condition profile10 min
Granulomatous epicarditis
Diagnosis-first internal-organ pathology profile covering granulomatous epicarditis, look-alikes, evidence limits and confirmation.
Fish healthHeart pathology / epicardiumOrgan pathology
Disease / condition profile10 min
Myocardial granulomas
Diagnosis-first internal-organ pathology profile covering myocardial granulomas, look-alikes, evidence limits and confirmation.
Fish healthHeart pathology / myocardiumOrgan pathology
Disease / condition profile10 min
Ventricular compacta thickening
Diagnosis-first internal-organ pathology profile covering ventricular compacta thickening, look-alikes, evidence limits and confirmation.
Fish healthHeart pathology / ventricular wallOrgan pathology
Disease / condition profile10 min
Ventricular wall thinning
Diagnosis-first internal-organ pathology profile covering ventricular wall thinning, look-alikes, evidence limits and confirmation.
Fish healthHeart pathology / ventricular wallOrgan pathology
Disease / condition profile10 min
Ventricular trabecular loss
Diagnosis-first internal-organ pathology profile covering ventricular trabecular loss, look-alikes, evidence limits and confirmation.
Fish healthHeart pathology / ventricular trabeculaeOrgan pathology
Disease / condition profile10 min
Bulbus arteriosus degenerative cardiomyopathy
Diagnosis-first internal-organ pathology profile covering bulbus arteriosus degenerative cardiomyopathy, look-alikes, evidence limits and confirmation.
Fish healthHeart pathology / bulbus arteriosusOrgan pathology
Disease / condition profile10 min
Splenic congestion
Diagnosis-first internal-organ pathology profile covering splenic congestion, look-alikes, evidence limits and confirmation.
Fish healthSpleen pathology / circulationOrgan pathology
Disease / condition profile10 min
Splenic haemorrhage
Diagnosis-first internal-organ pathology profile covering splenic haemorrhage, look-alikes, evidence limits and confirmation.
Fish healthSpleen pathology / circulationOrgan pathology
Disease / condition profile10 min
Splenic interstitial oedema
Diagnosis-first internal-organ pathology profile covering splenic interstitial oedema, look-alikes, evidence limits and confirmation.
Fish healthSpleen pathology / interstitiumOrgan pathology
Disease / condition profile10 min
Splenic parenchymal necrosis
Diagnosis-first internal-organ pathology profile covering splenic parenchymal necrosis, look-alikes, evidence limits and confirmation.
Fish healthSpleen pathology / parenchymaOrgan pathology
Disease / condition profile10 min
Splenic lymphoid degeneration
Diagnosis-first internal-organ pathology profile covering splenic lymphoid degeneration, look-alikes, evidence limits and confirmation.
Fish healthSpleen pathology / lymphoid tissueOrgan pathology
Disease / condition profile10 min
Splenic lymphoid depletion
Diagnosis-first internal-organ pathology profile covering splenic lymphoid depletion, look-alikes, evidence limits and confirmation.
Fish healthSpleen pathology / lymphoid tissueOrgan pathology
Disease / condition profile10 min
Splenic white-pulp atrophy
Diagnosis-first internal-organ pathology profile covering splenic white-pulp atrophy, look-alikes, evidence limits and confirmation.
Fish healthSpleen pathology / white pulpOrgan pathology
Disease / condition profile10 min
Splenic pulp atrophy
Diagnosis-first internal-organ pathology profile covering splenic pulp atrophy, look-alikes, evidence limits and confirmation.
Fish healthSpleen pathology / splenic pulpOrgan pathology
Disease / condition profile10 min
Splenic red-pulp expansion
Diagnosis-first internal-organ pathology profile covering splenic red-pulp expansion, look-alikes, evidence limits and confirmation.
Fish healthSpleen pathology / red pulpOrgan pathology
Disease / condition profile10 min
Splenic red-pulp hyperaemia
Diagnosis-first internal-organ pathology profile covering splenic red-pulp hyperaemia, look-alikes, evidence limits and confirmation.
Fish healthSpleen pathology / red pulp circulationOrgan pathology
Disease / condition profile10 min
Splenic perivascular oedema
Diagnosis-first internal-organ pathology profile covering splenic perivascular oedema, look-alikes, evidence limits and confirmation.
Fish healthSpleen pathology / perivascular tissueOrgan pathology
Disease / condition profile10 min
Splenic fibrin deposition
Diagnosis-first internal-organ pathology profile covering splenic fibrin deposition, look-alikes, evidence limits and confirmation.
Fish healthSpleen pathology / splenic pulpOrgan pathology
Disease / condition profile10 min
Splenic haemosiderosis
Diagnosis-first internal-organ pathology profile covering splenic haemosiderosis, look-alikes, evidence limits and confirmation.
Fish healthSpleen pathology / pigmentOrgan pathology
Disease / condition profile10 min
Splenic erythrocyte haemolysis
Diagnosis-first internal-organ pathology profile covering splenic erythrocyte haemolysis, look-alikes, evidence limits and confirmation.
Fish healthSpleen pathology / erythrocytesOrgan pathology
Disease / condition profile10 min
Splenic melanomacrophage-centre expansion
Diagnosis-first internal-organ pathology profile covering splenic melanomacrophage-centre expansion, look-alikes, evidence limits and confirmation.
Fish healthSpleen pathology / melanomacrophagesOrgan pathology
Disease / condition profile10 min
Splenic melanomacrophage pigment accumulation
Diagnosis-first internal-organ pathology profile covering splenic melanomacrophage pigment accumulation, look-alikes, evidence limits and confirmation.
Fish healthSpleen pathology / melanomacrophagesOrgan pathology
Disease / condition profile10 min
Splenic ellipsoid-cell disorientation
Diagnosis-first internal-organ pathology profile covering splenic ellipsoid-cell disorientation, look-alikes, evidence limits and confirmation.
Fish healthSpleen pathology / ellipsoidsOrgan pathology
Disease / condition profile10 min
Splenic cloudy swelling
Diagnosis-first internal-organ pathology profile covering splenic cloudy swelling, look-alikes, evidence limits and confirmation.
Fish healthSpleen pathology / cellular swellingOrgan pathology
Disease / condition profile10 min
Splenic vascular dilation
Diagnosis-first internal-organ pathology profile covering splenic vascular dilation, look-alikes, evidence limits and confirmation.
Fish healthSpleen pathology / blood vesselsOrgan pathology
Disease / condition profile10 min
Splenic vessel-wall thickening
Diagnosis-first internal-organ pathology profile covering splenic vessel-wall thickening, look-alikes, evidence limits and confirmation.
Fish healthSpleen pathology / blood vesselsOrgan pathology
Disease / condition profile10 min
Splenic trabecular thickening
Diagnosis-first internal-organ pathology profile covering splenic trabecular thickening, look-alikes, evidence limits and confirmation.
Fish healthSpleen pathology / trabeculaeOrgan pathology
Disease / condition profile10 min
Splenic architectural disorganisation
Diagnosis-first internal-organ pathology profile covering splenic architectural disorganisation, look-alikes, evidence limits and confirmation.
Fish healthSpleen pathology / architectureOrgan pathology
Disease / condition profile10 min
Splenic haematopoietic necrosis
Diagnosis-first internal-organ pathology profile covering splenic haematopoietic necrosis, look-alikes, evidence limits and confirmation.
Fish healthSpleen pathology / haematopoietic tissueOrgan pathology
Disease / condition profile10 min
Splenic macrophage activation
Diagnosis-first internal-organ pathology profile covering splenic macrophage activation, look-alikes, evidence limits and confirmation.
Fish healthSpleen pathology / macrophagesOrgan pathology
Disease / condition profile10 min
Splenic perivascular pigment deposition
Diagnosis-first internal-organ pathology profile covering splenic perivascular pigment deposition, look-alikes, evidence limits and confirmation.
Fish healthSpleen pathology / pigmentOrgan pathology
Symptom differential10 min
What can cause a white membrane covering the heart at fish necropsy?
Post-mortem differential for what can cause a white membrane covering the heart at fish necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / heart surfaceNecropsy
Symptom differential10 min
What can cause an enlarged heart seen during a fish necropsy?
Post-mortem differential for what can cause an enlarged heart seen during a fish necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / heartNecropsy
Symptom differential10 min
What can cause an unusually small heart seen during a fish necropsy?
Post-mortem differential for what can cause an unusually small heart seen during a fish necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / heartNecropsy
Symptom differential10 min
What can cause clear or cloudy fluid around the heart at fish necropsy?
Post-mortem differential for what can cause clear or cloudy fluid around the heart at fish necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / pericardial cavityNecropsy
Symptom differential10 min
What can cause bloody fluid around the heart or in the pericardial cavity?
Post-mortem differential for what can cause bloody fluid around the heart or in the pericardial cavity?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / pericardial cavityNecropsy
Symptom differential10 min
What can cause stringy or fibrin-like material around the heart at necropsy?
Post-mortem differential for what can cause stringy or fibrin-like material around the heart at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / pericardial cavityNecropsy
Symptom differential10 min
What can cause a heart that appears adhered to the pericardium at necropsy?
Post-mortem differential for what can cause a heart that appears adhered to the pericardium at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / cardiac adhesionsNecropsy
Symptom differential10 min
What can cause unusually pale heart muscle at fish necropsy?
Post-mortem differential for what can cause unusually pale heart muscle at fish necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / myocardiumNecropsy
Symptom differential10 min
What can cause mottled or patchy red heart muscle at necropsy?
Post-mortem differential for what can cause mottled or patchy red heart muscle at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / myocardiumNecropsy
Symptom differential10 min
What can cause white or pale foci in the heart muscle at necropsy?
Post-mortem differential for what can cause white or pale foci in the heart muscle at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / myocardiumNecropsy
Symptom differential10 min
What can cause one or more nodules on or within the heart at necropsy?
Post-mortem differential for what can cause one or more nodules on or within the heart at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / heartNecropsy
Symptom differential10 min
What can cause a rough or irregular heart surface at necropsy?
Post-mortem differential for what can cause a rough or irregular heart surface at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / epicardiumNecropsy
Symptom differential10 min
What can cause an unusually thick ventricular wall at necropsy?
Post-mortem differential for what can cause an unusually thick ventricular wall at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / ventricular wallNecropsy
Symptom differential10 min
What can cause an unusually thin ventricular wall at necropsy?
Post-mortem differential for what can cause an unusually thin ventricular wall at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / ventricular wallNecropsy
Symptom differential10 min
What can cause reduced or poorly developed ventricular trabeculation at necropsy?
Post-mortem differential for what can cause reduced or poorly developed ventricular trabeculation at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / ventricular structureNecropsy
Symptom differential10 min
What can cause an enlarged or distorted bulbus arteriosus at necropsy?
Post-mortem differential for what can cause an enlarged or distorted bulbus arteriosus at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / bulbus arteriosusNecropsy
Symptom differential10 min
What can cause an irregularly shaped or deformed heart at necropsy?
Post-mortem differential for what can cause an irregularly shaped or deformed heart at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / heartNecropsy
Symptom differential10 min
What can cause heart muscle that feels unusually soft or friable at necropsy?
Post-mortem differential for what can cause heart muscle that feels unusually soft or friable at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / myocardiumNecropsy
Symptom differential10 min
What can cause heart muscle that feels unusually firm at necropsy?
Post-mortem differential for what can cause heart muscle that feels unusually firm at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / myocardiumNecropsy
Symptom differential10 min
What can cause clot-like material in or around the heart at necropsy?
Post-mortem differential for what can cause clot-like material in or around the heart at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / cardiac circulationNecropsy
Symptom differential10 min
What can cause similar heart abnormalities in several fish from the same aquarium?
Post-mortem differential for what can cause similar heart abnormalities in several fish from the same aquarium?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / shared patternNecropsy
Symptom differential10 min
What can cause a normal-looking heart despite severe illness before death?
Post-mortem differential for what can cause a normal-looking heart despite severe illness before death?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / evidence limitsNecropsy
Symptom differential10 min
What can cause an abnormal-looking heart after sudden unexplained fish death?
Post-mortem differential for what can cause an abnormal-looking heart after sudden unexplained fish death?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / heartNecropsy
Symptom differential10 min
What can cause both the heart region and liver appearing congested at necropsy?
Post-mortem differential for what can cause both the heart region and liver appearing congested at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / multi-organ circulationNecropsy
Symptom differential10 min
What can cause both the heart and kidney appearing abnormal at necropsy?
Post-mortem differential for what can cause both the heart and kidney appearing abnormal at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / multi-organ diseaseNecropsy
Symptom differential10 min
What can cause an enlarged spleen seen during a fish necropsy?
Post-mortem differential for what can cause an enlarged spleen seen during a fish necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / spleenNecropsy
Symptom differential10 min
What can cause an unusually small spleen seen during a fish necropsy?
Post-mortem differential for what can cause an unusually small spleen seen during a fish necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / spleenNecropsy
Symptom differential10 min
What can cause an unusually pale spleen seen during a fish necropsy?
Post-mortem differential for what can cause an unusually pale spleen seen during a fish necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / spleenNecropsy
Symptom differential10 min
What can cause an unusually dark spleen seen during a fish necropsy?
Post-mortem differential for what can cause an unusually dark spleen seen during a fish necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / spleenNecropsy
Symptom differential10 min
What can cause a red or congested-looking spleen at necropsy?
Post-mortem differential for what can cause a red or congested-looking spleen at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / spleen circulationNecropsy
Symptom differential10 min
What can cause a mottled or patchy spleen seen during a fish necropsy?
Post-mortem differential for what can cause a mottled or patchy spleen seen during a fish necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / spleenNecropsy
Symptom differential10 min
What can cause white spots or pale foci in the spleen at necropsy?
Post-mortem differential for what can cause white spots or pale foci in the spleen at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / spleenNecropsy
Symptom differential10 min
What can cause red foci or haemorrhagic-looking areas in the spleen at necropsy?
Post-mortem differential for what can cause red foci or haemorrhagic-looking areas in the spleen at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / spleenNecropsy
Symptom differential10 min
What can cause one or more nodules in the spleen at necropsy?
Post-mortem differential for what can cause one or more nodules in the spleen at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / spleenNecropsy
Symptom differential10 min
What can cause cyst-like or fluid-filled spaces in the spleen at necropsy?
Post-mortem differential for what can cause cyst-like or fluid-filled spaces in the spleen at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / spleenNecropsy
Symptom differential10 min
What can cause gritty or strongly pigmented foci in the spleen at necropsy?
Post-mortem differential for what can cause gritty or strongly pigmented foci in the spleen at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / spleen pigmentNecropsy
Symptom differential10 min
What can cause a soft or friable spleen at necropsy?
Post-mortem differential for what can cause a soft or friable spleen at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / spleenNecropsy
Symptom differential10 min
What can cause an unusually firm spleen at necropsy?
Post-mortem differential for what can cause an unusually firm spleen at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / spleenNecropsy
Symptom differential10 min
What can cause an irregular spleen surface at necropsy?
Post-mortem differential for what can cause an irregular spleen surface at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / spleenNecropsy
Symptom differential10 min
What can cause a very blood-filled spleen at necropsy?
Post-mortem differential for what can cause a very blood-filled spleen at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / spleen circulationNecropsy
Symptom differential10 min
What can cause dark pigment clusters visible in the spleen at necropsy or histology?
Post-mortem differential for what can cause dark pigment clusters visible in the spleen at necropsy or histology?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / spleen pigmentNecropsy
Symptom differential10 min
What can cause yellow-brown pigment deposits in the spleen?
Post-mortem differential for what can cause yellow-brown pigment deposits in the spleen?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / spleen pigmentNecropsy
Symptom differential10 min
What can cause prominent or thick splenic trabeculae seen at necropsy or histology?
Post-mortem differential for what can cause prominent or thick splenic trabeculae seen at necropsy or histology?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / spleen architectureNecropsy
Symptom differential10 min
What can cause similar spleen abnormalities in several fish from the same aquarium?
Post-mortem differential for what can cause similar spleen abnormalities in several fish from the same aquarium?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / shared patternNecropsy
Symptom differential10 min
What can cause a normal-looking spleen despite severe illness before death?
Post-mortem differential for what can cause a normal-looking spleen despite severe illness before death?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / evidence limitsNecropsy
Symptom differential10 min
What can cause an abnormal-looking spleen after sudden unexplained fish death?
Post-mortem differential for what can cause an abnormal-looking spleen after sudden unexplained fish death?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / spleenNecropsy
Symptom differential10 min
What can cause an abnormal-looking spleen after chronic wasting or weight loss?
Post-mortem differential for what can cause an abnormal-looking spleen after chronic wasting or weight loss?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / spleenNecropsy
Symptom differential10 min
What can cause an abnormal spleen in a fish that had very pale gills?
Post-mortem differential for what can cause an abnormal spleen in a fish that had very pale gills?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / spleen and anaemiaNecropsy
Symptom differential10 min
What can cause both the spleen and kidney appearing abnormal at necropsy?
Post-mortem differential for what can cause both the spleen and kidney appearing abnormal at necropsy?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / multi-organ diseaseNecropsy
Symptom differential10 min
What can cause difficulty telling normal post-mortem spleen change from a true lesion?
Post-mortem differential for what can cause difficulty telling normal post-mortem spleen change from a true lesion?, with autolysis limits, water/exposure checks and diagnostic next steps.
Fish healthNecropsy differential / evidence limitsNecropsy
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Fish, plants, water, equipment, health and breeding affect each other. Do not solve one part while ignoring the system around it.
Open the full knowledge libraryDisease / condition profile10 min
Fish neoplasia and tumours
Identify the pattern, look-alikes and diagnostic steps for fish neoplasia and tumours without treating symptoms as proof.
neoplasiadiseasediagnosis
Disease / condition profile10 min
Fibroma (benign connective-tissue tumour)
Identify the pattern, look-alikes and diagnostic steps for fibroma (benign connective-tissue tumour) without treating symptoms as proof.
neoplasiadiseasediagnosis
Disease / condition profile10 min
Papilloma and papilloma-like skin tumours
Identify the pattern, look-alikes and diagnostic steps for papilloma and papilloma-like skin tumours without treating symptoms as proof.
neoplasiadiseasediagnosis
Disease / condition profile10 min
Melanoma and pigment-cell tumours
Identify the pattern, look-alikes and diagnostic steps for melanoma and pigment-cell tumours without treating symptoms as proof.
neoplasiadiseasediagnosis
Disease / condition profile10 min
Gonadal and ovarian tumours in fish
Identify the pattern, look-alikes and diagnostic steps for gonadal and ovarian tumours in fish without treating symptoms as proof.
neoplasiadiseasediagnosis
Disease / condition profile10 min
Ichthyophoniasis (Ichthyophonus infection)
Identify the pattern, look-alikes and diagnostic steps for ichthyophoniasis (ichthyophonus infection) without treating symptoms as proof.
fungaldiseasediagnosis
Disease / condition profile10 min
Phaeohyphomycosis (Exophiala and related fungi)
Identify the pattern, look-alikes and diagnostic steps for phaeohyphomycosis (exophiala and related fungi) without treating symptoms as proof.
fungaldiseasediagnosis
Disease / condition profile10 min
Fusariosis in fish
Identify the pattern, look-alikes and diagnostic steps for fusariosis in fish without treating symptoms as proof.
fungaldiseasediagnosis
Disease / condition profile10 min
Tetrahymena infection
Identify the pattern, look-alikes and diagnostic steps for tetrahymena infection without treating symptoms as proof.
parasitesdiseasediagnosis
Disease / condition profile10 min
Pseudocapillaria nematode infection
Identify the pattern, look-alikes and diagnostic steps for pseudocapillaria nematode infection without treating symptoms as proof.
parasitesdiseasediagnosis
Disease / condition profile10 min
Capillaria intestinal worms
Identify the pattern, look-alikes and diagnostic steps for capillaria intestinal worms without treating symptoms as proof.
parasitesdiseasediagnosis
Disease / condition profile10 min
Asian fish tapeworm (Bothriocephalus acheilognathi)
Identify the pattern, look-alikes and diagnostic steps for asian fish tapeworm (bothriocephalus acheilognathi) without treating symptoms as proof.
parasitesdiseasediagnosis
Disease / condition profile10 min
Eustrongylides and related red nematode larvae
Identify the pattern, look-alikes and diagnostic steps for eustrongylides and related red nematode larvae without treating symptoms as proof.
parasitesdiseasediagnosis
Disease / condition profile10 min
Bolbophorus and related trematode infections
Identify the pattern, look-alikes and diagnostic steps for bolbophorus and related trematode infections without treating symptoms as proof.
parasitesdiseasediagnosis
Disease / condition profile10 min
Black-spot disease (trematode metacercariae)
Identify the pattern, look-alikes and diagnostic steps for black-spot disease (trematode metacercariae) without treating symptoms as proof.
parasitesdiseasediagnosis
Disease / condition profile10 min
Neobenedenia and related marine skin flukes
Identify the pattern, look-alikes and diagnostic steps for neobenedenia and related marine skin flukes without treating symptoms as proof.
parasitesdiseasediagnosis
Disease / condition profile10 min
Turbellarian “black ich” of marine fish
Identify the pattern, look-alikes and diagnostic steps for turbellarian “black ich” of marine fish without treating symptoms as proof.
parasitesdiseasediagnosis
Disease / condition profile10 min
Streptococcus iniae infection
Identify the pattern, look-alikes and diagnostic steps for streptococcus iniae infection without treating symptoms as proof.
bacterialdiseasediagnosis
Disease / condition profile10 min
Lactococcus garvieae infection
Identify the pattern, look-alikes and diagnostic steps for lactococcus garvieae infection without treating symptoms as proof.
bacterialdiseasediagnosis
Disease / condition profile10 min
Photobacterium damselae infection
Identify the pattern, look-alikes and diagnostic steps for photobacterium damselae infection without treating symptoms as proof.
bacterialdiseasediagnosis
Disease / condition profile10 min
Francisellosis (Francisella noatunensis complex)
Identify the pattern, look-alikes and diagnostic steps for francisellosis (francisella noatunensis complex) without treating symptoms as proof.
bacterialdiseasediagnosis
Disease / condition profile10 min
Goldfish herpesviral haematopoietic necrosis (CyHV-2)
Identify the pattern, look-alikes and diagnostic steps for goldfish herpesviral haematopoietic necrosis (cyhv-2) without treating symptoms as proof.
viraldiseasediagnosis
Disease / condition profile10 min
Carp pox (Cyprinid herpesvirus-1)
Identify the pattern, look-alikes and diagnostic steps for carp pox (cyprinid herpesvirus-1) without treating symptoms as proof.
viraldiseasediagnosis
Disease / condition profile10 min
Viral nervous necrosis (betanodavirus)
Identify the pattern, look-alikes and diagnostic steps for viral nervous necrosis (betanodavirus) without treating symptoms as proof.
viraldiseasediagnosis
Disease / condition profile10 min
Head and lateral line erosion (HLLE)
Identify the pattern, look-alikes and diagnostic steps for head and lateral line erosion (hlle) without treating symptoms as proof.
noninfectiousdiseasediagnosis
Disease / condition profile10 min
Osmotic and salinity shock
Identify the pattern, look-alikes and diagnostic steps for osmotic and salinity shock without treating symptoms as proof.
environmentaldiseasediagnosis
Disease / condition profile10 min
Soap and detergent contamination
Identify the pattern, look-alikes and diagnostic steps for soap and detergent contamination without treating symptoms as proof.
environmentaldiseasediagnosis
Disease / condition profile10 min
Pesticide and insecticide exposure
Identify the pattern, look-alikes and diagnostic steps for pesticide and insecticide exposure without treating symptoms as proof.
environmentaldiseasediagnosis
Disease / condition profile10 min
Lead toxicity in aquarium fish
Identify the pattern, look-alikes and diagnostic steps for lead toxicity in aquarium fish without treating symptoms as proof.
environmentaldiseasediagnosis
Disease / condition profile10 min
Aluminium toxicity in fish
Identify the pattern, look-alikes and diagnostic steps for aluminium toxicity in fish without treating symptoms as proof.
environmentaldiseasediagnosis
Disease / condition profile10 min
Excess iron and iron-associated gill injury
Identify the pattern, look-alikes and diagnostic steps for excess iron and iron-associated gill injury without treating symptoms as proof.
environmentaldiseasediagnosis
Disease / condition profile10 min
Thiamine (vitamin B1) deficiency
Identify the pattern, look-alikes and diagnostic steps for thiamine (vitamin b1) deficiency without treating symptoms as proof.
nutritionaldiseasediagnosis
Disease / condition profile10 min
Vitamin E deficiency
Identify the pattern, look-alikes and diagnostic steps for vitamin e deficiency without treating symptoms as proof.
nutritionaldiseasediagnosis
Disease / condition profile10 min
Iodine deficiency and goitre
Identify the pattern, look-alikes and diagnostic steps for iodine deficiency and goitre without treating symptoms as proof.
nutritionaldiseasediagnosis
Disease / condition profile10 min
Essential fatty-acid deficiency
Identify the pattern, look-alikes and diagnostic steps for essential fatty-acid deficiency without treating symptoms as proof.
nutritionaldiseasediagnosis
Disease / condition profile10 min
Rancid feed and oxidised-fat injury
Identify the pattern, look-alikes and diagnostic steps for rancid feed and oxidised-fat injury without treating symptoms as proof.
nutritionaldiseasediagnosis
Disease / condition profile10 min
Aflatoxicosis and mouldy-feed toxicity
Identify the pattern, look-alikes and diagnostic steps for aflatoxicosis and mouldy-feed toxicity without treating symptoms as proof.
nutritionaldiseasediagnosis
Disease / condition profile10 min
Obesity and chronic overconditioning
Identify the pattern, look-alikes and diagnostic steps for obesity and chronic overconditioning without treating symptoms as proof.
nutritionaldiseasediagnosis
Disease / condition profile10 min
Fatty liver (hepatic lipidosis)
Identify the pattern, look-alikes and diagnostic steps for fatty liver (hepatic lipidosis) without treating symptoms as proof.
nutritionaldiseasediagnosis
Disease / condition profile10 min
Renal or kidney failure in fish
Identify the pattern, look-alikes and diagnostic steps for renal or kidney failure in fish without treating symptoms as proof.
noninfectiousdiseasediagnosis
Disease / condition profile10 min
Liver disease and hepatic failure
Identify the pattern, look-alikes and diagnostic steps for liver disease and hepatic failure without treating symptoms as proof.
noninfectiousdiseasediagnosis
Disease / condition profile10 min
Ovarian cysts and chronic reproductive disease
Identify the pattern, look-alikes and diagnostic steps for ovarian cysts and chronic reproductive disease without treating symptoms as proof.
noninfectiousdiseasediagnosis
Disease / condition profile10 min
Vitamin A deficiency
Identify the pattern, look-alikes and diagnostic steps for vitamin a deficiency without treating symptoms as proof.
nutritionaldiseasediagnosis
Disease / condition profile10 min
Vitamin D and mineral-balance disorders
Identify the pattern, look-alikes and diagnostic steps for vitamin d and mineral-balance disorders without treating symptoms as proof.
nutritionaldiseasediagnosis
Disease / condition profile10 min
Selenium deficiency or imbalance
Identify the pattern, look-alikes and diagnostic steps for selenium deficiency or imbalance without treating symptoms as proof.
nutritionaldiseasediagnosis
Disease / condition profile10 min
Phosphorus deficiency and skeletal disease
Identify the pattern, look-alikes and diagnostic steps for phosphorus deficiency and skeletal disease without treating symptoms as proof.
nutritionaldiseasediagnosis
Disease / condition profile10 min
Dietary protein deficiency
Identify the pattern, look-alikes and diagnostic steps for dietary protein deficiency without treating symptoms as proof.
nutritionaldiseasediagnosis
Disease / condition profile10 min
Chronic starvation and cachexia
Identify the pattern, look-alikes and diagnostic steps for chronic starvation and cachexia without treating symptoms as proof.
nutritionaldiseasediagnosis
Disease / condition profile10 min
Osmoregulatory failure
Identify the pattern, look-alikes and diagnostic steps for osmoregulatory failure without treating symptoms as proof.
noninfectiousdiseasediagnosis
Disease / condition profile10 min
Cataracts linked to nutritional or metabolic disease
Identify the pattern, look-alikes and diagnostic steps for cataracts linked to nutritional or metabolic disease without treating symptoms as proof.
noninfectiousdiseasediagnosis
Symptom differential10 min
Why has a schooling fish stopped schooling?
Compare likely causes and first checks when has a schooling fish stopped schooling.
behavioursymptomdiagnosis
Symptom differential10 min
Why is one fish isolating from the school?
Compare likely causes and first checks when is one fish isolating from the school.
behavioursymptomdiagnosis
Symptom differential10 min
Why is my fish shaking its head?
Compare likely causes and first checks when is my fish shaking its head.
neurologic/gillsymptomdiagnosis
Symptom differential10 min
Why does my fish rub its face or head on objects?
Compare likely causes and first checks when does my fish rub its face or head on objects.
skin/gillsymptomdiagnosis
Symptom differential10 min
Why is my fish rubbing its belly on the substrate?
Compare likely causes and first checks when is my fish rubbing its belly on the substrate.
skinsymptomdiagnosis
Symptom differential10 min
Why is my fish breathing unusually slowly or shallowly?
Compare likely causes and first checks when is my fish breathing unusually slowly or shallowly.
respiratorysymptomdiagnosis
Symptom differential10 min
Why is one gill cover stuck open?
Compare likely causes and first checks when is one gill cover stuck open.
gillsymptomdiagnosis
Symptom differential10 min
Why is one gill cover barely moving?
Compare likely causes and first checks when is one gill cover barely moving.
gillsymptomdiagnosis
Symptom differential10 min
Why can’t my fish close its mouth?
Compare likely causes and first checks when can’t my fish close its mouth.
mouthsymptomdiagnosis
Symptom differential10 min
Why does food come out through my fish’s gills?
Compare likely causes and first checks when does food come out through my fish’s gills.
feeding/gillsymptomdiagnosis
Symptom differential10 min
Why is my fish swollen under the jaw or throat?
Compare likely causes and first checks when is my fish swollen under the jaw or throat.
mouth/gillsymptomdiagnosis
Symptom differential10 min
Why is my fish’s dorsal fin suddenly collapsed?
Compare likely causes and first checks when is my fish’s dorsal fin suddenly collapsed.
fin/behavioursymptomdiagnosis
Symptom differential10 min
Why is my fish’s tail drooping downward?
Compare likely causes and first checks when is my fish’s tail drooping downward.
neuromuscularsymptomdiagnosis
Symptom differential10 min
Why is my fish holding its fins rigid?
Compare likely causes and first checks when is my fish holding its fins rigid.
fin/neurologicsymptomdiagnosis
Symptom differential10 min
Why has my fish become stiff or rigid?
Compare likely causes and first checks when has my fish become stiff or rigid.
neurologicsymptomdiagnosis
Symptom differential10 min
Why is my fish arching its body?
Compare likely causes and first checks when is my fish arching its body.
neuromuscularsymptomdiagnosis
Symptom differential10 min
Why is the muscle along my fish’s back wasting away?
Compare likely causes and first checks when is the muscle along my fish’s back wasting away.
body conditionsymptomdiagnosis
Symptom differential10 min
Why are my fish’s eyes suddenly different sizes?
Compare likely causes and first checks when are my fish’s eyes suddenly different sizes.
eyesymptomdiagnosis
Symptom differential10 min
Why is only one eye turning white?
Compare likely causes and first checks when is only one eye turning white.
eyesymptomdiagnosis
Symptom differential10 min
Why does one fish pupil look a different size?
Compare likely causes and first checks when does one fish pupil look a different size.
eye/neurologicsymptomdiagnosis
Symptom differential10 min
Why is one eye turning unusually dark?
Compare likely causes and first checks when is one eye turning unusually dark.
eyesymptomdiagnosis
Symptom differential10 min
Why does my fish have red patches on its belly?
Compare likely causes and first checks when does my fish have red patches on its belly.
skin/systemicsymptomdiagnosis
Symptom differential10 min
Why are individual scales red without an open ulcer?
Compare likely causes and first checks when are individual scales red without an open ulcer.
skinsymptomdiagnosis
Symptom differential10 min
Why is my fish swollen with fluid but not pineconing?
Compare likely causes and first checks when is my fish swollen with fluid but not pineconing.
abdomensymptomdiagnosis
Symptom differential10 min
Why is my fish’s swollen belly soft?
Compare likely causes and first checks when is my fish’s swollen belly soft.
abdomensymptomdiagnosis
Symptom differential10 min
Why did my fish’s belly suddenly look sunken?
Compare likely causes and first checks when did my fish’s belly suddenly look sunken.
body conditionsymptomdiagnosis
Symptom differential10 min
Why is there white fuzzy material on my fish’s mouth?
Compare likely causes and first checks when is there white fuzzy material on my fish’s mouth.
mouth/skinsymptomdiagnosis
Symptom differential10 min
Why is there a grey patch around my fish’s mouth?
Compare likely causes and first checks when is there a grey patch around my fish’s mouth.
mouth/skinsymptomdiagnosis
Symptom differential10 min
Why is my fish’s skin wearing away without a deep ulcer?
Compare likely causes and first checks when is my fish’s skin wearing away without a deep ulcer.
skinsymptomdiagnosis
Symptom differential10 min
Why are scales lifting on only one side of my fish?
Compare likely causes and first checks when are scales lifting on only one side of my fish.
skin/abdomensymptomdiagnosis
Symptom differential10 min
Why is the base of my fish’s fin swollen?
Compare likely causes and first checks when is the base of my fish’s fin swollen.
finsymptomdiagnosis
Symptom differential10 min
Why is my fish’s tail not moving normally?
Compare likely causes and first checks when is my fish’s tail not moving normally.
neuromuscularsymptomdiagnosis
Symptom differential10 min
Why is one pectoral fin not moving?
Compare likely causes and first checks when is one pectoral fin not moving.
finsymptomdiagnosis
Symptom differential10 min
Why does my fish keep circling in one direction?
Compare likely causes and first checks when does my fish keep circling in one direction.
neurologicsymptomdiagnosis
Symptom differential10 min
Why is my fish swimming in tight circles?
Compare likely causes and first checks when is my fish swimming in tight circles.
neurologicsymptomdiagnosis
Symptom differential10 min
Why is my fish hanging vertically nose-up while breathing?
Compare likely causes and first checks when is my fish hanging vertically nose-up while breathing.
respiratory/buoyancysymptomdiagnosis
Symptom differential10 min
Why do my fish gasp after the aquarium lights go out?
Compare likely causes and first checks when do my fish gasp after the aquarium lights go out.
respiratorysymptomdiagnosis
Symptom differential10 min
Why do my fish gasp after a heavy feeding?
Compare likely causes and first checks when do my fish gasp after a heavy feeding.
respiratory/environmentsymptomdiagnosis
Symptom differential10 min
Why are my fish at the surface early in the morning?
Compare likely causes and first checks when are my fish at the surface early in the morning.
respiratory/environmentsymptomdiagnosis
Symptom differential10 min
Why is my fish suddenly hiding from bright light?
Compare likely causes and first checks when is my fish suddenly hiding from bright light.
behaviour/eyesymptomdiagnosis
Symptom differential10 min
Why has my fish stopped eating even though it looks normal?
Compare likely causes and first checks when has my fish stopped eating even though it looks normal.
feedingsymptomdiagnosis
Symptom differential10 min
Why does my fish chew and repeatedly spit out food?
Compare likely causes and first checks when does my fish chew and repeatedly spit out food.
feeding/mouthsymptomdiagnosis
Symptom differential10 min
Why is my fish passing red or bloody faeces?
Compare likely causes and first checks when is my fish passing red or bloody faeces.
digestivesymptomdiagnosis
Symptom differential10 min
Why is my fish passing clear mucus instead of normal faeces?
Compare likely causes and first checks when is my fish passing clear mucus instead of normal faeces.
digestivesymptomdiagnosis
Symptom differential10 min
Why are my fish’s faeces extremely thin and thread-like?
Compare likely causes and first checks when are my fish’s faeces extremely thin and thread-like.
digestivesymptomdiagnosis
Symptom differential10 min
Why does my fish’s abdomen look like it is pulsing?
Compare likely causes and first checks when does my fish’s abdomen look like it is pulsing.
respiratory/abdomensymptomdiagnosis
Symptom differential10 min
Why is my fish suddenly losing muscle control?
Compare likely causes and first checks when is my fish suddenly losing muscle control.
neurologicsymptomdiagnosis
Symptom differential10 min
Why does my fish keep falling over then recovering?
Compare likely causes and first checks when does my fish keep falling over then recovering.
neurologic/buoyancysymptomdiagnosis
Symptom differential10 min
Why has my fish suddenly become aggressive?
Compare likely causes and first checks when has my fish suddenly become aggressive.
behavioursymptomdiagnosis
Symptom differential10 min
Why did my fish become sick after changing salinity?
Compare likely causes and first checks when did my fish become sick after changing salinity.
environmentsymptomdiagnosis
Disease / condition profile10 min
Aeromonas caviae infection
Diagnosis-first profile covering aeromonas caviae infection, its key look-alikes, confirmation and safe first-response priorities.
Fish healthBacterial / opportunisticDifferential
Disease / condition profile10 min
Aeromonas jandaei infection
Diagnosis-first profile covering aeromonas jandaei infection, its key look-alikes, confirmation and safe first-response priorities.
Fish healthBacterial / opportunisticDifferential
Disease / condition profile10 min
Aeromonas bestiarum infection
Diagnosis-first profile covering aeromonas bestiarum infection, its key look-alikes, confirmation and safe first-response priorities.
Fish healthBacterial / opportunisticDifferential
Disease / condition profile10 min
Pseudomonas fluorescens infection
Diagnosis-first profile covering pseudomonas fluorescens infection, its key look-alikes, confirmation and safe first-response priorities.
Fish healthBacterial / opportunisticDifferential
Disease / condition profile10 min
Pseudomonas putida infection
Diagnosis-first profile covering pseudomonas putida infection, its key look-alikes, confirmation and safe first-response priorities.
Fish healthBacterial / opportunisticDifferential
Disease / condition profile10 min
Stenotrophomonas maltophilia infection in fish
Diagnosis-first profile covering stenotrophomonas maltophilia infection in fish, its key look-alikes, confirmation and safe first-response priorities.
Fish healthBacterial / opportunisticDifferential
Disease / condition profile10 min
Klebsiella pneumoniae infection in fish
Diagnosis-first profile covering klebsiella pneumoniae infection in fish, its key look-alikes, confirmation and safe first-response priorities.
Fish healthBacterial / opportunisticDifferential
Disease / condition profile10 min
Enterococcus faecalis infection in fish
Diagnosis-first profile covering enterococcus faecalis infection in fish, its key look-alikes, confirmation and safe first-response priorities.
Fish healthBacterial / opportunisticDifferential
Disease / condition profile10 min
Morganella morganii infection in fish
Diagnosis-first profile covering morganella morganii infection in fish, its key look-alikes, confirmation and safe first-response priorities.
Fish healthBacterial / opportunisticDifferential
Disease / condition profile10 min
Providencia rettgeri infection in fish
Diagnosis-first profile covering providencia rettgeri infection in fish, its key look-alikes, confirmation and safe first-response priorities.
Fish healthBacterial / opportunisticDifferential
Disease / condition profile10 min
Vibrio ordalii infection
Diagnosis-first profile covering vibrio ordalii infection, its key look-alikes, confirmation and safe first-response priorities.
Fish healthBacterial / marineDifferential
Disease / condition profile10 min
Vibrio campbellii infection
Diagnosis-first profile covering vibrio campbellii infection, its key look-alikes, confirmation and safe first-response priorities.
Fish healthBacterial / marineDifferential
Disease / condition profile10 min
Vibrio splendidus infection
Diagnosis-first profile covering vibrio splendidus infection, its key look-alikes, confirmation and safe first-response priorities.
Fish healthBacterial / marineDifferential
Disease / condition profile10 min
Tenacibaculum dicentrarchi infection
Diagnosis-first profile covering tenacibaculum dicentrarchi infection, its key look-alikes, confirmation and safe first-response priorities.
Fish healthBacterial / marineDifferential
Disease / condition profile10 min
Tenacibaculum soleae infection
Diagnosis-first profile covering tenacibaculum soleae infection, its key look-alikes, confirmation and safe first-response priorities.
Fish healthBacterial / marineDifferential
Disease / condition profile10 min
Loma salmonae microsporidial gill disease
Diagnosis-first profile covering loma salmonae microsporidial gill disease, its key look-alikes, confirmation and safe first-response priorities.
Fish healthParasitic / microsporidianDifferential
Disease / condition profile10 min
Nucleospora salmonis microsporidiosis
Diagnosis-first profile covering nucleospora salmonis microsporidiosis, its key look-alikes, confirmation and safe first-response priorities.
Fish healthParasitic / microsporidianDifferential
Disease / condition profile10 min
Enterospora nucleophila microsporidiosis
Diagnosis-first profile covering enterospora nucleophila microsporidiosis, its key look-alikes, confirmation and safe first-response priorities.
Fish healthParasitic / microsporidianDifferential
Disease / condition profile10 min
Enteromyxum scophthalmi infection
Diagnosis-first profile covering enteromyxum scophthalmi infection, its key look-alikes, confirmation and safe first-response priorities.
Fish healthParasitic / myxozoanDifferential
Disease / condition profile10 min
Parvicapsula minibicornis infection
Diagnosis-first profile covering parvicapsula minibicornis infection, its key look-alikes, confirmation and safe first-response priorities.
Fish healthParasitic / myxozoanDifferential
Disease / condition profile10 min
Kudoa thyrsites infection and soft-flesh disease
Diagnosis-first profile covering kudoa thyrsites infection and soft-flesh disease, its key look-alikes, confirmation and safe first-response priorities.
Fish healthParasitic / myxozoanDifferential
Disease / condition profile10 min
Anguillicola crassus swim-bladder nematode infection
Diagnosis-first profile covering anguillicola crassus swim-bladder nematode infection, its key look-alikes, confirmation and safe first-response priorities.
Fish healthParasitic / nematodeDifferential
Disease / condition profile10 min
Heterobothrium okamotoi gill-fluke infection
Diagnosis-first profile covering heterobothrium okamotoi gill-fluke infection, its key look-alikes, confirmation and safe first-response priorities.
Fish healthParasitic / monogeneanDifferential
Disease / condition profile10 min
Pseudorhabdosynochus gill-fluke infestation
Diagnosis-first profile covering pseudorhabdosynochus gill-fluke infestation, its key look-alikes, confirmation and safe first-response priorities.
Fish healthParasitic / monogeneanDifferential
Disease / condition profile10 min
Microcotyle gill-fluke infestation
Diagnosis-first profile covering microcotyle gill-fluke infestation, its key look-alikes, confirmation and safe first-response priorities.
Fish healthParasitic / monogeneanDifferential
Disease / condition profile10 min
Diplectanum gill-fluke infestation
Diagnosis-first profile covering diplectanum gill-fluke infestation, its key look-alikes, confirmation and safe first-response priorities.
Fish healthParasitic / monogeneanDifferential
Disease / condition profile10 min
Sparicotyle chrysophrii gill-fluke infestation
Diagnosis-first profile covering sparicotyle chrysophrii gill-fluke infestation, its key look-alikes, confirmation and safe first-response priorities.
Fish healthParasitic / monogeneanDifferential
Disease / condition profile10 min
Zeuxapta seriolae gill-fluke infestation
Diagnosis-first profile covering zeuxapta seriolae gill-fluke infestation, its key look-alikes, confirmation and safe first-response priorities.
Fish healthParasitic / monogeneanDifferential
Disease / condition profile10 min
Lernanthropus kroyeri gill-copepod infestation
Diagnosis-first profile covering lernanthropus kroyeri gill-copepod infestation, its key look-alikes, confirmation and safe first-response priorities.
Fish healthParasitic / copepodDifferential
Disease / condition profile10 min
Clavella adunca copepod infestation
Diagnosis-first profile covering clavella adunca copepod infestation, its key look-alikes, confirmation and safe first-response priorities.
Fish healthParasitic / copepodDifferential
Disease / condition profile10 min
Hatschekia gill-copepod infestation
Diagnosis-first profile covering hatschekia gill-copepod infestation, its key look-alikes, confirmation and safe first-response priorities.
Fish healthParasitic / copepodDifferential
Disease / condition profile10 min
Achlya water-mould infection
Diagnosis-first profile covering achlya water-mould infection, its key look-alikes, confirmation and safe first-response priorities.
Fish healthOomycete / water mouldDifferential
Disease / condition profile10 min
Pseudoloma neurophilia microsporidiosis
Diagnosis-first profile covering pseudoloma neurophilia microsporidiosis, its key look-alikes, confirmation and safe first-response priorities.
Fish healthParasitic / microsporidianDifferential
Disease / condition profile10 min
Ovipleistophora ovariae ovarian microsporidiosis
Diagnosis-first profile covering ovipleistophora ovariae ovarian microsporidiosis, its key look-alikes, confirmation and safe first-response priorities.
Fish healthParasitic / microsporidianDifferential
Disease / condition profile10 min
Heterosporis anguillarum microsporidiosis
Diagnosis-first profile covering heterosporis anguillarum microsporidiosis, its key look-alikes, confirmation and safe first-response priorities.
Fish healthParasitic / microsporidianDifferential
Disease / condition profile10 min
Erythrocytic inclusion body syndrome
Diagnosis-first profile covering erythrocytic inclusion body syndrome, its key look-alikes, confirmation and safe first-response priorities.
Fish healthViral / salmonidDifferential
Disease / condition profile10 min
Hirame rhabdovirus disease
Diagnosis-first profile covering hirame rhabdovirus disease, its key look-alikes, confirmation and safe first-response priorities.
Fish healthViral / fishDifferential
Disease / condition profile10 min
Pike fry rhabdovirus disease
Diagnosis-first profile covering pike fry rhabdovirus disease, its key look-alikes, confirmation and safe first-response priorities.
Fish healthViral / fryDifferential
Disease / condition profile10 min
Perch rhabdovirus disease
Diagnosis-first profile covering perch rhabdovirus disease, its key look-alikes, confirmation and safe first-response priorities.
Fish healthViral / perchDifferential
Disease / condition profile10 min
White sturgeon iridovirus disease
Diagnosis-first profile covering white sturgeon iridovirus disease, its key look-alikes, confirmation and safe first-response priorities.
Fish healthViral / sturgeonDifferential
Disease / condition profile10 min
Acipenserid herpesvirus 2 disease
Diagnosis-first profile covering acipenserid herpesvirus 2 disease, its key look-alikes, confirmation and safe first-response priorities.
Fish healthViral / sturgeonDifferential
Disease / condition profile10 min
Epizootic epitheliotropic disease of lake trout
Diagnosis-first profile covering epizootic epitheliotropic disease of lake trout, its key look-alikes, confirmation and safe first-response priorities.
Fish healthViral / salmonidDifferential
Disease / condition profile10 min
Rock bream iridovirus disease
Diagnosis-first profile covering rock bream iridovirus disease, its key look-alikes, confirmation and safe first-response priorities.
Fish healthViral / marineDifferential
Disease / condition profile10 min
Chronic gill hyperplasia and lamellar fusion
Diagnosis-first profile covering chronic gill hyperplasia and lamellar fusion, its key look-alikes, confirmation and safe first-response priorities.
Fish healthGill / lesion patternDifferential
Disease / condition profile10 min
Suspended-solids gill irritation and branchial injury
Diagnosis-first profile covering suspended-solids gill irritation and branchial injury, its key look-alikes, confirmation and safe first-response priorities.
Fish healthEnvironmental / gillDifferential
Disease / condition profile10 min
Foreign-body gastrointestinal obstruction
Diagnosis-first profile covering foreign-body gastrointestinal obstruction, its key look-alikes, confirmation and safe first-response priorities.
Fish healthInternal / mechanicalDifferential
Disease / condition profile10 min
Intestinal intussusception
Diagnosis-first profile covering intestinal intussusception, its key look-alikes, confirmation and safe first-response priorities.
Fish healthInternal / mechanicalDifferential
Disease / condition profile10 min
Rectal and cloacal prolapse
Diagnosis-first profile covering rectal and cloacal prolapse, its key look-alikes, confirmation and safe first-response priorities.
Fish healthInternal / structuralDifferential
Disease / condition profile10 min
Opercular deformity and shortened gill covers
Diagnosis-first profile covering opercular deformity and shortened gill covers, its key look-alikes, confirmation and safe first-response priorities.
Fish healthDevelopmental / skeletalDifferential
Disease / condition profile10 min
Craniofacial and jaw deformity
Diagnosis-first profile covering craniofacial and jaw deformity, its key look-alikes, confirmation and safe first-response priorities.
Fish healthDevelopmental / skeletalDifferential
Symptom differential10 min
Why are my fish sick after quarantine?
Symptom-first differential for why are my fish sick after quarantine? using timing, water tests and exposure clues before treatment.
Fish healthQuarantine / timelineTimeline
Symptom differential10 min
Why did my fish get sick after leaving quarantine?
Symptom-first differential for why did my fish get sick after leaving quarantine? using timing, water tests and exposure clues before treatment.
Fish healthQuarantine / transferTimeline
Symptom differential10 min
Why are my fish sick after netting or handling?
Symptom-first differential for why are my fish sick after netting or handling? using timing, water tests and exposure clues before treatment.
Fish healthHandling / traumaTimeline
Symptom differential10 min
Why are my fish sick after anaesthesia or sedation?
Symptom-first differential for why are my fish sick after anaesthesia or sedation? using timing, water tests and exposure clues before treatment.
Fish healthProcedure / recoveryTimeline
Symptom differential10 min
Why are my fish sick after using untreated tap water?
Symptom-first differential for why are my fish sick after using untreated tap water? using timing, water tests and exposure clues before treatment.
Fish healthSource water / chemicalTimeline
Symptom differential10 min
Why are my fish sick after topping up evaporated water?
Symptom-first differential for why are my fish sick after topping up evaporated water? using timing, water tests and exposure clues before treatment.
Fish healthSource water / chemistryTimeline
Symptom differential10 min
Why are my fish sick after using softened household water?
Symptom-first differential for why are my fish sick after using softened household water? using timing, water tests and exposure clues before treatment.
Fish healthSource water / chemistryTimeline
Symptom differential10 min
Why are my fish sick after switching to well or bore water?
Symptom-first differential for why are my fish sick after switching to well or bore water? using timing, water tests and exposure clues before treatment.
Fish healthSource water / chemistryTimeline
Symptom differential10 min
Why are my fish sick after using collected rainwater?
Symptom-first differential for why are my fish sick after using collected rainwater? using timing, water tests and exposure clues before treatment.
Fish healthSource water / contaminationTimeline
Symptom differential10 min
Why are my fish sick after a change in the town water supply?
Symptom-first differential for why are my fish sick after a change in the town water supply? using timing, water tests and exposure clues before treatment.
Fish healthSource water / municipalTimeline
Symptom differential10 min
Why are my fish sick after using water from a garden hose?
Symptom-first differential for why are my fish sick after using water from a garden hose? using timing, water tests and exposure clues before treatment.
Fish healthSource water / contaminationTimeline
Symptom differential10 min
Why are my fish sick after using water stored in a container?
Symptom-first differential for why are my fish sick after using water stored in a container? using timing, water tests and exposure clues before treatment.
Fish healthSource water / storageTimeline
Symptom differential10 min
Why are my fish sick after adding activated carbon?
Symptom-first differential for why are my fish sick after adding activated carbon? using timing, water tests and exposure clues before treatment.
Fish healthFiltration / mediaTimeline
Symptom differential10 min
Why are my fish sick after removing activated carbon?
Symptom-first differential for why are my fish sick after removing activated carbon? using timing, water tests and exposure clues before treatment.
Fish healthFiltration / mediaTimeline
Symptom differential10 min
Why are my fish sick after adding phosphate remover?
Symptom-first differential for why are my fish sick after adding phosphate remover? using timing, water tests and exposure clues before treatment.
Fish healthFiltration / mediaTimeline
Symptom differential10 min
Why are my fish sick after adding chemical filter media?
Symptom-first differential for why are my fish sick after adding chemical filter media? using timing, water tests and exposure clues before treatment.
Fish healthFiltration / mediaTimeline
Symptom differential10 min
Why are my fish sick after the air pump stopped?
Symptom-first differential for why are my fish sick after the air pump stopped? using timing, water tests and exposure clues before treatment.
Fish healthEquipment / oxygenTimeline
Symptom differential10 min
Why are my fish sick after the filter was off overnight?
Symptom-first differential for why are my fish sick after the filter was off overnight? using timing, water tests and exposure clues before treatment.
Fish healthEquipment / filtrationTimeline
Symptom differential10 min
Why are my fish sick after water flow suddenly dropped?
Symptom-first differential for why are my fish sick after water flow suddenly dropped? using timing, water tests and exposure clues before treatment.
Fish healthEquipment / circulationTimeline
Symptom differential10 min
Why are my fish sick after changing the circulation pump?
Symptom-first differential for why are my fish sick after changing the circulation pump? using timing, water tests and exposure clues before treatment.
Fish healthEquipment / circulationTimeline
Symptom differential10 min
Why are my fish sick after adding new substrate?
Symptom-first differential for why are my fish sick after adding new substrate? using timing, water tests and exposure clues before treatment.
Fish healthAquascape / substrateTimeline
Symptom differential10 min
Why are my fish sick after replacing all the substrate?
Symptom-first differential for why are my fish sick after replacing all the substrate? using timing, water tests and exposure clues before treatment.
Fish healthAquascape / substrateTimeline
Symptom differential10 min
Why are my fish sick after adding driftwood?
Symptom-first differential for why are my fish sick after adding driftwood? using timing, water tests and exposure clues before treatment.
Fish healthAquascape / materialTimeline
Symptom differential10 min
Why are my fish sick after adding rocks or stone?
Symptom-first differential for why are my fish sick after adding rocks or stone? using timing, water tests and exposure clues before treatment.
Fish healthAquascape / materialTimeline
Symptom differential10 min
Why are my fish sick after aquarium silicone, epoxy or glue was used?
Symptom-first differential for why are my fish sick after aquarium silicone, epoxy or glue was used? using timing, water tests and exposure clues before treatment.
Fish healthAquascape / chemicalTimeline
Symptom differential10 min
Why are my fish sick after painting or renovating the room?
Symptom-first differential for why are my fish sick after painting or renovating the room? using timing, water tests and exposure clues before treatment.
Fish healthAirborne / contaminationTimeline
Symptom differential10 min
Why are my fish sick after smoke or vaping near the aquarium?
Symptom-first differential for why are my fish sick after smoke or vaping near the aquarium? using timing, water tests and exposure clues before treatment.
Fish healthAirborne / contaminationTimeline
Symptom differential10 min
Why are my fish sick after soap or hand lotion got into the tank?
Symptom-first differential for why are my fish sick after soap or hand lotion got into the tank? using timing, water tests and exposure clues before treatment.
Fish healthChemical / contaminationTimeline
Symptom differential10 min
Why are my fish sick after an oily film appeared on the water?
Symptom-first differential for why are my fish sick after an oily film appeared on the water? using timing, water tests and exposure clues before treatment.
Fish healthSurface / gas exchangeTimeline
Symptom differential10 min
Why are my fish sick after a fish died unnoticed in the tank?
Symptom-first differential for why are my fish sick after a fish died unnoticed in the tank? using timing, water tests and exposure clues before treatment.
Fish healthOrganic load / mortalityTimeline
Symptom differential10 min
Why are my fish sick after a snail or other animal died in the tank?
Symptom-first differential for why are my fish sick after a snail or other animal died in the tank? using timing, water tests and exposure clues before treatment.
Fish healthOrganic load / mortalityTimeline
Symptom differential10 min
Why are my fish sick after an algae bloom crashed?
Symptom-first differential for why are my fish sick after an algae bloom crashed? using timing, water tests and exposure clues before treatment.
Fish healthBloom / oxygenTimeline
Symptom differential10 min
Why are my fish sick after a bacterial bloom or cloudy-water event?
Symptom-first differential for why are my fish sick after a bacterial bloom or cloudy-water event? using timing, water tests and exposure clues before treatment.
Fish healthBloom / water qualityTimeline
Symptom differential10 min
Why are my fish sick after the aquarium water turned green?
Symptom-first differential for why are my fish sick after the aquarium water turned green? using timing, water tests and exposure clues before treatment.
Fish healthBloom / water qualityTimeline
Symptom differential10 min
Why are my fish sick after several missed water changes?
Symptom-first differential for why are my fish sick after several missed water changes? using timing, water tests and exposure clues before treatment.
Fish healthMaintenance / water qualityTimeline
Symptom differential10 min
Why are my fish sick after a long period without maintenance?
Symptom-first differential for why are my fish sick after a long period without maintenance? using timing, water tests and exposure clues before treatment.
Fish healthMaintenance / water qualityTimeline
Symptom differential10 min
Why do my fish keep relapsing after feeding?
Symptom-first differential for why do my fish keep relapsing after feeding? using timing, water tests and exposure clues before treatment.
Fish healthPattern / feedingTimeline
Symptom differential10 min
Why do my fish recover in a hospital tank but relapse in the display?
Symptom-first differential for why do my fish recover in a hospital tank but relapse in the display? using timing, water tests and exposure clues before treatment.
Fish healthPattern / environmentTimeline
Symptom differential10 min
Why are fish getting sick in several tanks at the same time?
Symptom-first differential for why are fish getting sick in several tanks at the same time? using timing, water tests and exposure clues before treatment.
Fish healthPattern / shared exposureTimeline
Symptom differential10 min
Why are fish sick in only one tank when several tanks share the same source water?
Symptom-first differential for why are fish sick in only one tank when several tanks share the same source water? using timing, water tests and exposure clues before treatment.
Fish healthPattern / comparisonTimeline
Symptom differential10 min
Why are only older fish getting sick?
Symptom-first differential for why are only older fish getting sick? using timing, water tests and exposure clues before treatment.
Fish healthPattern / ageTimeline
Symptom differential10 min
Why are only breeding females getting sick?
Symptom-first differential for why are only breeding females getting sick? using timing, water tests and exposure clues before treatment.
Fish healthPattern / reproductiveTimeline
Symptom differential10 min
Why are only male fish getting sick?
Symptom-first differential for why are only male fish getting sick? using timing, water tests and exposure clues before treatment.
Fish healthPattern / sexTimeline
Symptom differential10 min
Why are only surface-dwelling fish getting sick?
Symptom-first differential for why are only surface-dwelling fish getting sick? using timing, water tests and exposure clues before treatment.
Fish healthPattern / habitatTimeline
Symptom differential10 min
Why is my fish flashing or rubbing with no visible spots?
Symptom-first differential for why is my fish flashing or rubbing with no visible spots? using timing, water tests and exposure clues before treatment.
Fish healthBehaviour / irritationTimeline
Symptom differential10 min
Why is my fish sick but still eating normally?
Symptom-first differential for why is my fish sick but still eating normally? using timing, water tests and exposure clues before treatment.
Fish healthPattern / appetiteTimeline
Symptom differential10 min
Why is my fish sick with no visible external signs?
Symptom-first differential for why is my fish sick with no visible external signs? using timing, water tests and exposure clues before treatment.
Fish healthPattern / internalTimeline
Symptom differential10 min
Why are fish dying with no obvious external signs?
Symptom-first differential for why are fish dying with no obvious external signs? using timing, water tests and exposure clues before treatment.
Fish healthPattern / mortalityTimeline
Symptom differential10 min
Why is my fish breathing fast even though oxygen and water tests look normal?
Symptom-first differential for why is my fish breathing fast even though oxygen and water tests look normal? using timing, water tests and exposure clues before treatment.
Fish healthRespiratory / differentialTimeline
Symptom differential10 min
Why are my fish sick after plumbing work or a change to household water pipes?
Symptom-first differential for why are my fish sick after plumbing work or a change to household water pipes? using timing, water tests and exposure clues before treatment.
Fish healthSource water / plumbingTimeline
Disease / condition profile10 min
Aeromonas media infection
Diagnosis-first profile covering aeromonas media infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthBacterial / opportunisticDisease
Disease / condition profile10 min
Aeromonas allosaccharophila infection
Diagnosis-first profile covering aeromonas allosaccharophila infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthBacterial / opportunisticDisease
Disease / condition profile10 min
Pseudomonas plecoglossicida infection
Diagnosis-first profile covering pseudomonas plecoglossicida infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthBacterial / systemicDisease
Disease / condition profile10 min
Flavobacterium tructae infection
Diagnosis-first profile covering flavobacterium tructae infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthBacterial / flavobacterialDisease
Disease / condition profile10 min
Chryseobacterium piscicola infection
Diagnosis-first profile covering chryseobacterium piscicola infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthBacterial / flavobacterialDisease
Disease / condition profile10 min
Vibrio rotiferianus infection
Diagnosis-first profile covering vibrio rotiferianus infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthBacterial / marineDisease
Disease / condition profile10 min
Tenacibaculum finnmarkense infection
Diagnosis-first profile covering tenacibaculum finnmarkense infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthBacterial / marineDisease
Disease / condition profile10 min
Tenacibaculum ovolyticum egg-associated disease
Diagnosis-first profile covering tenacibaculum ovolyticum egg-associated disease, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthBacterial / eggs and larvaeDisease
Disease / condition profile10 min
Tenacibaculum piscium infection
Diagnosis-first profile covering tenacibaculum piscium infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthBacterial / marineDisease
Disease / condition profile10 min
Tenacibaculum discolor infection
Diagnosis-first profile covering tenacibaculum discolor infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthBacterial / marineDisease
Disease / condition profile10 min
Gyrodactylus turnbulli infestation
Diagnosis-first profile covering gyrodactylus turnbulli infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile10 min
Gyrodactylus bullatarudis infestation
Diagnosis-first profile covering gyrodactylus bullatarudis infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile10 min
Gyrodactylus kobayashii infestation
Diagnosis-first profile covering gyrodactylus kobayashii infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile10 min
Dactylogyrus vastator gill-fluke infestation
Diagnosis-first profile covering dactylogyrus vastator gill-fluke infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile10 min
Dactylogyrus extensus gill-fluke infestation
Diagnosis-first profile covering dactylogyrus extensus gill-fluke infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile10 min
Cichlidogyrus tilapiae gill-fluke infestation
Diagnosis-first profile covering cichlidogyrus tilapiae gill-fluke infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile10 min
Cichlidogyrus sclerosus gill-fluke infestation
Diagnosis-first profile covering cichlidogyrus sclerosus gill-fluke infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile10 min
Dactylogyrus anchoratus gill-fluke infestation
Diagnosis-first profile covering dactylogyrus anchoratus gill-fluke infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / monogeneanDisease
Disease / condition profile10 min
Sanguinicola inermis blood-fluke infection
Diagnosis-first profile covering sanguinicola inermis blood-fluke infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / blood flukeDisease
Disease / condition profile10 min
Cardicola forsteri blood-fluke infection
Diagnosis-first profile covering cardicola forsteri blood-fluke infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / blood flukeDisease
Disease / condition profile10 min
Cardicola orientalis blood-fluke infection
Diagnosis-first profile covering cardicola orientalis blood-fluke infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / blood flukeDisease
Disease / condition profile10 min
Paradeontacylix grandispinus blood-fluke infection
Diagnosis-first profile covering paradeontacylix grandispinus blood-fluke infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / blood flukeDisease
Disease / condition profile10 min
Paradeontacylix kampachi blood-fluke infection
Diagnosis-first profile covering paradeontacylix kampachi blood-fluke infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / blood flukeDisease
Disease / condition profile10 min
Aporocotyle simplex blood-fluke infection
Diagnosis-first profile covering aporocotyle simplex blood-fluke infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / blood flukeDisease
Disease / condition profile10 min
Posthodiplostomum minimum white-grub infection
Diagnosis-first profile covering posthodiplostomum minimum white-grub infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / trematodeDisease
Disease / condition profile10 min
Schistocephalus solidus plerocercoid infection
Diagnosis-first profile covering schistocephalus solidus plerocercoid infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / cestodeDisease
Disease / condition profile10 min
Khawia sinensis tapeworm infection
Diagnosis-first profile covering khawia sinensis tapeworm infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / cestodeDisease
Disease / condition profile10 min
Neoechinorhynchus rutili acanthocephalan infection
Diagnosis-first profile covering neoechinorhynchus rutili acanthocephalan infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / acanthocephalanDisease
Disease / condition profile10 min
Pomphorhynchus laevis acanthocephalan infection
Diagnosis-first profile covering pomphorhynchus laevis acanthocephalan infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / acanthocephalanDisease
Disease / condition profile10 min
Diplostomum pseudospathaceum eye-fluke infection
Diagnosis-first profile covering diplostomum pseudospathaceum eye-fluke infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / trematodeDisease
Disease / condition profile10 min
Spinitectus carolini nematode infection
Diagnosis-first profile covering spinitectus carolini nematode infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / nematodeDisease
Disease / condition profile10 min
Raphidascaris acus nematode infection
Diagnosis-first profile covering raphidascaris acus nematode infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / nematodeDisease
Disease / condition profile10 min
Hysterothylacium aduncum nematode infection
Diagnosis-first profile covering hysterothylacium aduncum nematode infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / nematodeDisease
Disease / condition profile10 min
Goussia carpelli coccidiosis
Diagnosis-first profile covering goussia carpelli coccidiosis, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / coccidianDisease
Disease / condition profile10 min
Cryptobia salmositica infection
Diagnosis-first profile covering cryptobia salmositica infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / haemoflagellateDisease
Disease / condition profile10 min
Argulus japonicus fish-louse infestation
Diagnosis-first profile covering argulus japonicus fish-louse infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / branchiuranDisease
Disease / condition profile10 min
Neoergasilus japonicus copepod infestation
Diagnosis-first profile covering neoergasilus japonicus copepod infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / copepodDisease
Disease / condition profile10 min
Ergasilus sieboldi copepod infestation
Diagnosis-first profile covering ergasilus sieboldi copepod infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / copepodDisease
Disease / condition profile10 min
Lernaea cyprinacea anchor-worm infestation
Diagnosis-first profile covering lernaea cyprinacea anchor-worm infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / copepodDisease
Disease / condition profile10 min
Caligus elongatus sea-louse infestation
Diagnosis-first profile covering caligus elongatus sea-louse infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / copepodDisease
Disease / condition profile10 min
Caligus rogercresseyi sea-louse infestation
Diagnosis-first profile covering caligus rogercresseyi sea-louse infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / copepodDisease
Disease / condition profile10 min
Lepeophtheirus salmonis sea-louse infestation
Diagnosis-first profile covering lepeophtheirus salmonis sea-louse infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / copepodDisease
Disease / condition profile10 min
Ceratothoa oestroides isopod infestation
Diagnosis-first profile covering ceratothoa oestroides isopod infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / isopodDisease
Disease / condition profile10 min
Flavobacterium inkyongense infection
Diagnosis-first profile covering flavobacterium inkyongense infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthBacterial / flavobacterialDisease
Disease / condition profile10 min
Salmincola californiensis copepod infestation
Diagnosis-first profile covering salmincola californiensis copepod infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / copepodDisease
Disease / condition profile10 min
Anilocra physodes isopod infestation
Diagnosis-first profile covering anilocra physodes isopod infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / isopodDisease
Disease / condition profile10 min
Cymothoa exigua isopod infestation
Diagnosis-first profile covering cymothoa exigua isopod infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / isopodDisease
Disease / condition profile10 min
Hatschekia pagellibogneravei gill copepod infestation
Diagnosis-first profile covering hatschekia pagellibogneravei gill copepod infestation, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthParasitic / copepodDisease
Disease / condition profile10 min
Flavobacterium plurextorum infection
Diagnosis-first profile covering flavobacterium plurextorum infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthBacterial / flavobacterialDisease
Disease / condition profile10 min
Chryseobacterium viscerum infection
Diagnosis-first profile covering chryseobacterium viscerum infection, its key look-alikes, confirmation approach and safe first-response priorities.
Fish healthBacterial / flavobacterialDisease
Symptom differential10 min
Why are my fish sick after turning on a UV sterilizer?
Differential guide for why are my fish sick after turning on a uv sterilizer?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthEquipment / UVTimeline
Symptom differential10 min
Why are my fish sick after the UV sterilizer stopped working?
Differential guide for why are my fish sick after the uv sterilizer stopped working?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthEquipment / UVTimeline
Symptom differential10 min
Why are my fish sick after an automatic feeder overfed the tank?
Differential guide for why are my fish sick after an automatic feeder overfed the tank?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthFeeding / equipmentTimeline
Symptom differential10 min
Why are my fish sick after dry food became damp or mouldy?
Differential guide for why are my fish sick after dry food became damp or mouldy?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthFeeding / contaminationTimeline
Symptom differential10 min
Why are my fish sick after a large plant melt or plant die-off?
Differential guide for why are my fish sick after a large plant melt or plant die-off?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthPlanted tank / decompositionTimeline
Symptom differential10 min
Why are my fish sick after adding root tabs?
Differential guide for why are my fish sick after adding root tabs?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthPlanted tank / fertiliserTimeline
Symptom differential10 min
Why are my fish sick after using liquid carbon?
Differential guide for why are my fish sick after using liquid carbon?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthPlanted tank / chemicalTimeline
Symptom differential10 min
Why are my fish sick after adding crushed coral?
Differential guide for why are my fish sick after adding crushed coral?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthWater chemistry / mineralsTimeline
Symptom differential10 min
Why are my fish sick after rinsing filter media in tap water?
Differential guide for why are my fish sick after rinsing filter media in tap water?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthFiltration / biofilterTimeline
Symptom differential10 min
Why are my fish sick after filter media dried out?
Differential guide for why are my fish sick after filter media dried out?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthFiltration / biofilterTimeline
Symptom differential10 min
Why are my fish sick after adding bottled bacteria?
Differential guide for why are my fish sick after adding bottled bacteria?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthCycling / additivesTimeline
Symptom differential10 min
Why are my fish sick after adding a cycling product?
Differential guide for why are my fish sick after adding a cycling product?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthCycling / additivesTimeline
Symptom differential10 min
Why are my fish sick after an ammonia spike?
Differential guide for why are my fish sick after an ammonia spike?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthWater quality / ammoniaTimeline
Symptom differential10 min
Why are my fish sick after a nitrite spike?
Differential guide for why are my fish sick after a nitrite spike?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthWater quality / nitriteTimeline
Symptom differential10 min
Why are my fish sick after a nitrate spike?
Differential guide for why are my fish sick after a nitrate spike?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthWater quality / nitrateTimeline
Symptom differential10 min
Why are my fish sick after an emergency refill following a leak?
Differential guide for why are my fish sick after an emergency refill following a leak?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthEmergency / source waterTimeline
Symptom differential10 min
Why are my fish sick after a power surge?
Differential guide for why are my fish sick after a power surge?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthEquipment / electricalTimeline
Symptom differential10 min
Why are my fish sick after running the aquarium on a generator?
Differential guide for why are my fish sick after running the aquarium on a generator?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthEmergency / powerTimeline
Symptom differential10 min
Why are my fish sick after flea or pesticide spray was used in the room?
Differential guide for why are my fish sick after flea or pesticide spray was used in the room?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthContamination / pesticideTimeline
Symptom differential10 min
Why are my fish sick after perfume, hairspray or deodorant was used near the tank?
Differential guide for why are my fish sick after perfume, hairspray or deodorant was used near the tank?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthContamination / aerosolTimeline
Symptom differential10 min
Why are my fish sick after candles, incense or an oil diffuser were used nearby?
Differential guide for why are my fish sick after candles, incense or an oil diffuser were used nearby?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthContamination / airborneTimeline
Symptom differential10 min
Why are my fish sick after floor cleaner or disinfectant was used near the aquarium?
Differential guide for why are my fish sick after floor cleaner or disinfectant was used near the aquarium?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthContamination / household chemicalTimeline
Symptom differential10 min
Why are my fish sick after the sump overflowed?
Differential guide for why are my fish sick after the sump overflowed?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthFiltration / sumpTimeline
Symptom differential10 min
Why are my fish sick after stagnant sump water back-siphoned into the tank?
Differential guide for why are my fish sick after stagnant sump water back-siphoned into the tank?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthFiltration / sumpTimeline
Symptom differential10 min
Why are my fish sick after changing an RO membrane or cartridge?
Differential guide for why are my fish sick after changing an ro membrane or cartridge?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthSource water / ROTimeline
Symptom differential10 min
Why are my fish sick after too much water conditioner was added?
Differential guide for why are my fish sick after too much water conditioner was added?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthSource water / conditionerTimeline
Symptom differential10 min
Why are my fish sick after hot tap water was added?
Differential guide for why are my fish sick after hot tap water was added?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthSource water / temperatureTimeline
Symptom differential10 min
Why are my fish sick after installing a new filter or sump?
Differential guide for why are my fish sick after installing a new filter or sump?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthFiltration / installationTimeline
Symptom differential10 min
Why are my marine fish sick after the protein skimmer stopped?
Differential guide for why are my marine fish sick after the protein skimmer stopped?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthMarine / skimmerTimeline
Symptom differential10 min
Why are my marine fish sick after the protein skimmer overflowed?
Differential guide for why are my marine fish sick after the protein skimmer overflowed?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthMarine / skimmerTimeline
Symptom differential10 min
Why are my fish sick after an ozone system malfunction?
Differential guide for why are my fish sick after an ozone system malfunction?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthEquipment / ozoneTimeline
Symptom differential10 min
Why are my reef fish sick after adding kalkwasser?
Differential guide for why are my reef fish sick after adding kalkwasser?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthReef / alkalinityTimeline
Symptom differential10 min
Why are my fish sick after adding a calcium supplement?
Differential guide for why are my fish sick after adding a calcium supplement?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthWater chemistry / supplementTimeline
Symptom differential10 min
Why are my fish sick after adding a magnesium supplement?
Differential guide for why are my fish sick after adding a magnesium supplement?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthWater chemistry / supplementTimeline
Symptom differential10 min
Why are my fish sick after adding water clarifier or flocculant?
Differential guide for why are my fish sick after adding water clarifier or flocculant?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthChemical / clarifierTimeline
Symptom differential10 min
Why are my fish sick after using a sulfur denitrator?
Differential guide for why are my fish sick after using a sulfur denitrator?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthFiltration / denitratorTimeline
Symptom differential10 min
Why are my fish sick after an airstone became blocked?
Differential guide for why are my fish sick after an airstone became blocked?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthAeration / equipmentTimeline
Symptom differential10 min
Why are my fish sick after an airline disconnected?
Differential guide for why are my fish sick after an airline disconnected?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthAeration / equipmentTimeline
Symptom differential10 min
Why are my fish sick after surface agitation was reduced?
Differential guide for why are my fish sick after surface agitation was reduced?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthAeration / gas exchangeTimeline
Symptom differential10 min
Why are my fish sick after a dosing pump malfunction?
Differential guide for why are my fish sick after a dosing pump malfunction?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthEquipment / dosingTimeline
Symptom differential10 min
Why are my fish sick after an automatic top-off malfunction?
Differential guide for why are my fish sick after an automatic top-off malfunction?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthEquipment / top-offTimeline
Symptom differential10 min
Why are my fish sick after a controller or thermostat malfunction?
Differential guide for why are my fish sick after a controller or thermostat malfunction?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthEquipment / controllerTimeline
Symptom differential10 min
Why are only my scaleless fish getting sick?
Differential guide for why are only my scaleless fish getting sick?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthCohort / sensitivityTimeline
Symptom differential10 min
Why is only one fish species sick in my mixed aquarium?
Differential guide for why is only one fish species sick in my mixed aquarium?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthCohort / speciesTimeline
Symptom differential10 min
Why are resident fish sick while the new fish still look healthy?
Differential guide for why are resident fish sick while the new fish still look healthy?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthCohort / introductionTimeline
Symptom differential10 min
Why are only juvenile fish getting sick?
Differential guide for why are only juvenile fish getting sick?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthCohort / ageTimeline
Symptom differential10 min
Why are only the largest fish getting sick?
Differential guide for why are only the largest fish getting sick?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthCohort / sizeTimeline
Symptom differential10 min
Why are my fish sick after a sudden GH or hardness change?
Differential guide for why are my fish sick after a sudden gh or hardness change?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthWater chemistry / hardnessTimeline
Symptom differential10 min
Why are my fish sick after KH or alkalinity dropped suddenly?
Differential guide for why are my fish sick after kh or alkalinity dropped suddenly?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthWater chemistry / alkalinityTimeline
Symptom differential10 min
Why are my fish sick after TDS changed suddenly?
Differential guide for why are my fish sick after tds changed suddenly?, with the key environmental checks, look-alikes and evidence-led next steps.
Fish healthWater chemistry / dissolved solidsTimeline