Identity and search names

Common name
Kissing gourami
Scientific name
Helostoma temminckii
Other names
Kissing fish, Green kisser, Pink kissing gourami, Helostoma temmincki
Category
Freshwater fish
Group
Bettas and gouramis
Origin
Lowland rivers, lakes, floodplains and vegetated wetlands of mainland and island Southeast Asia
Review outcome
PASSED

Environment and housing

Environment
Freshwater
Care level
Intermediate to advanced
Adult size
Commonly 20–30 cm total length; large adults may exceed 30 cm
Expected lifespan
Often 10–20 years with adult-scale care
Minimum housing
At least 450 L for one adult or a compatible pair; 600 L or more for a managed group
Temperature
22–28 °C
pH
6.0–8.0
Hardness or minerals
Soft to hard
Salinity
Freshwater
Lighting
Moderate with surface access and robust shaded structure
Social structure
Keep one adult, a compatible pair or a carefully observed group in very large housing
Placement or swimming zone
All levels with frequent surface access
Temperament
Assertive and sometimes damaging; lip-locking is a dominance contest rather than affection
Compatibility
Use only robust similarly sized fish and watch for chasing, mucus rasping and chronic exclusion
Habitat structure
Very large filtered aquarium with open swimming room, robust decor, surface access and plant material that can tolerate grazing

Feeding and nutrition

Diet
Algae, biofilm, plant material, plankton and small invertebrates plus balanced prepared omnivore foods
Feeding frequency
Provide plant-rich food daily with measured protein supplements and monitor body condition

Breeding and reproduction

Breeding or reproduction
Unlike bubble-nest gouramis, adults release buoyant eggs in open water under floating vegetation. Eggs rise to the surface and receive no care
Parental care
No parental care; adults may eat eggs and fry

System demands

Filtration
Use mature biological filtration sized for the full adult group and feeding load, with intake protection where juveniles, long fins or small fish are present. Provide steady turnover without preventing normal swimming or resting.
Aeration
Maintain strong surface gas exchange and stable dissolved oxygen. Increase aeration during warm weather, medication, transport recovery, breeding crowding or any ammonia or nitrite event.
Maintenance
Test ammonia, nitrite and nitrate, remove waste from feeding and shelter zones, and perform regular temperature- and chemistry-matched water changes before nitrate or dissolved organics accumulate.

Detailed husbandry

Identity scope
This profile applies to Helostoma temminckii, including green, pink leucistic and mottled domestic forms. Balloon-bodied fish are a selected deformity, not a separate species.
Adult size and space
Commonly 20–30 cm total length; large adults may exceed 30 cm. At least 450 L for one adult or a compatible pair; 600 L or more for a managed group. Plan around adult dimensions, activity, social structure, aggression and waste production rather than sale size.
Social structure
Keep one adult, a compatible pair or a carefully observed group in very large housing
Placement or swimming zone
Primary zone: All levels with frequent surface access. Keep that zone usable for movement, feeding and refuge.
Feeding ecology
Algae, biofilm, plant material, plankton and small invertebrates plus balanced prepared omnivore foods
Feeding plan
Provide plant-rich food daily with measured protein supplements and monitor body condition
Water stability
Maintain 22–28 °C; pH 6.0–8.0; hardness/minerals: Soft to hard. Stable oxygenation and nitrogen-cycle control matter more than chasing one exact number.
Adult projected load
Plan capacity for Keep one adult, a compatible pair or a carefully observed group in very large housing at the documented adult size (Commonly 20–30 cm total length; large adults may exceed 30 cm) in At least 450 L for one adult or a compatible pair; 600 L or more for a managed group. Include feeding intensity, territorial behaviour and breeding growth rather than counting sale-size juveniles.
Filtration
Use mature biological filtration sized for the full adult group and feeding load, with intake protection where juveniles, long fins or small fish are present. Provide steady turnover without preventing normal swimming or resting.
Aeration
Maintain strong surface gas exchange and stable dissolved oxygen. Increase aeration during warm weather, medication, transport recovery, breeding crowding or any ammonia or nitrite event.
Maintenance
Test ammonia, nitrite and nitrate, remove waste from feeding and shelter zones, and perform regular temperature- and chemistry-matched water changes before nitrate or dissolved organics accumulate.
Habitat structure
Very large filtered aquarium with open swimming room, robust decor, surface access and plant material that can tolerate grazing
Compatibility plan
Use only robust similarly sized fish and watch for chasing, mucus rasping and chronic exclusion
Breeding plan
Unlike bubble-nest gouramis, adults release buoyant eggs in open water under floating vegetation. Eggs rise to the surface and receive no care Parental care: No parental care; adults may eat eggs and fry.
Quarantine
Quarantine new fish in a separate cycled aquarium with dedicated equipment. Match temperature and mineral chemistry gradually, confirm feeding and normal respiration, and never add transport water to the established aquarium.
Welfare checks
Maintain the stated adult space and social structure, verify feeding and intervene early when injury, exclusion, weight loss, abnormal respiration or altered behaviour appears. Juveniles are sold for tanks they will outgrow. “Kissing” can become prolonged dominance fighting, and some individuals rasp the protective mucus of tankmates.
Biosecurity and release
Never release fish, fry, eggs, aquarium water, sediment, plants or live foods into drains, dams or natural waterways. Confirm current Australian import conditions and South Australian possession, trade and movement rules before acquisition or transfer.
Main risk
Juveniles are sold for tanks they will outgrow. “Kissing” can become prolonged dominance fighting, and some individuals rasp the protective mucus of tankmates.
Overridable warnings
Juveniles are sold for tanks they will outgrow. “Kissing” can become prolonged dominance fighting, and some individuals rasp the protective mucus of tankmates. Any override must still preserve adult space, social welfare, stable chemistry, oxygen and filter capacity.

Welfare and risk

Welfare checks
Maintain the stated adult space and social structure, verify feeding and intervene early when injury, exclusion, weight loss, abnormal respiration or altered behaviour appears. Juveniles are sold for tanks they will outgrow. “Kissing” can become prolonged dominance fighting, and some individuals rasp the protective mucus of tankmates.
Main warning
Juveniles are sold for tanks they will outgrow. “Kissing” can become prolonged dominance fighting, and some individuals rasp the protective mucus of tankmates.
Biosecurity
Never release fish, fry, eggs, aquarium water, sediment, plants or live foods into drains, dams or natural waterways. Confirm current Australian import conditions and South Australian possession, trade and movement rules before acquisition or transfer.

Sources

Source note

Current identity or scope, husbandry, system-demand, welfare and Australian biosecurity evidence checked; active retired-source links removed; all AquaNexus wording is original.

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