Cockatoo dwarf cichlid

Identity and search names

Single-species profile for Apistogramma cacatuoides. Domestic colour strains remain the same species but may differ from wild stock in water tolerance and provenance.

Environment and housing

Fine sand, leaf litter, wood, several small caves, broken sight lines and calm well-filtered water

Feeding and nutrition

Feeding ecology: Micropredator; offer quality sinking foods with regular frozen or live invertebrate foods

Feeding routine: Offer small meals once or twice daily and confirm females and subordinate fish feed

Breeding and reproduction

Cave spawner; the female tends eggs and fry while the male may defend a wider territory

Parental care: Female provides direct egg and fry care; male commonly defends the outer territory

System demands

Filtration: Use mature biological filtration sized for the adult stock and feeding load, with guarded intakes and a flow pattern the species can use without continual effort.

Aeration: Maintain strong gas exchange and stable dissolved oxygen, especially overnight, during warm weather, medication, crowding or any interruption to filtration.

Maintenance: Test ammonia and nitrite after changes or abnormal behaviour; remove waste from the occupied zone and perform regular water changes matched to temperature and mineral chemistry.

Detailed husbandry

Identity scope

Single-species profile for Apistogramma cacatuoides. Domestic colour strains remain the same species but may differ from wild stock in water tolerance and provenance.

Adult size and space

Males about 7–8 cm; females about 4–5 cm. At least 90 L for a compatible pair; harems require substantially more floor area and a separate defensible cave territory per female. Adult dimensions, activity, social structure and waste production matter more than sale size.

Social structure

Compatible pair, or one male with multiple females only where floor area and visual separation are genuinely adequate

Swimming zone

Primary zone: Bottom and lower mid water. Keep that zone usable and provide unobstructed feeding access, movement and refuge appropriate to the species.

Feeding ecology

Micropredator; offer quality sinking foods with regular frozen or live invertebrate foods

Feeding plan

Offer small meals once or twice daily and confirm females and subordinate fish feed

Water stability

Maintain 24–28 °C; pH: 5.5–7.5; hardness/minerals: Soft to moderately hard; wild-origin fish usually need softer water than domestic strains. Stable temperature, oxygen, mineral chemistry and nitrogen-cycle control matter more than chasing one exact number.

Habitat structure

Fine sand, leaf litter, wood, several small caves, broken sight lines and calm well-filtered water

Compatibility plan

Choose peaceful midwater fish and avoid bottom dwellers that repeatedly enter breeding caves

Breeding plan

Cave spawner; the female tends eggs and fry while the male may defend a wider territory. Parental care: Female provides direct egg and fry care; male commonly defends the outer territory. Do not trigger reproduction without capacity for aggression, eggs or fry and lawful long-term placement.

Quarantine

Quarantine new fish in a separate cycled aquarium with dedicated nets, containers and siphons. Match temperature and mineral chemistry gradually, confirm normal feeding, respiration, skin, fins and waste, and never pour transport water into the established aquarium.

Welfare checks

Check feeding access, body condition, fin damage, colour suppression, hiding and whether a fish is being trapped away from all caves.

Biosecurity and release

Never release fish, eggs, fry, aquarium water, sediment, plants or foods into drains, dams or natural waterways. Confirm the exact accepted identity against current Australian import requirements and applicable South Australian rules before import, sale or movement; import eligibility never authorises release or wild collection.

Main risk

A “pair or harem” label does not guarantee compatibility. Sex ratio, floor area, cave placement and escape routes decide whether fish are injured.

Adult Projected Load

Moderate for the planned adult stock. Calculate filtration, oxygen and swimming space from the full adult size (Males about 7–8 cm; females about 4–5 cm) and social group (Compatible pair, or one male with multiple females only where floor area and visual separation are genuinely adequate), not the juvenile sale size.

Filtration

Use mature mechanical and biological filtration with protected intakes and enough turnover for the adult group while preserving species-appropriate current and refuge.

Aeration

Provide strong gas exchange and backup aeration; increase oxygen support before warm weather, heavy feeding, crowding, medication or filter interruption reduces the safety margin.

Maintenance

Remove uneaten food and bottom waste, clean prefilters before flow falls, test ammonia and nitrite after changes, and perform regular temperature- and chemistry-matched water changes.

Overridable Warnings

A “pair or harem” label does not guarantee compatibility. Sex ratio, floor area, cave placement and escape routes decide whether fish are injured.

Welfare and risk

Check feeding access, body condition, fin damage, colour suppression, hiding and whether a fish is being trapped away from all caves. A “pair or harem” label does not guarantee compatibility. Sex ratio, floor area, cave placement and escape routes decide whether fish are injured.

Sources

• Eschmeyer’s Catalog of Fishes — Apistogramma cacatuoides — Accepted-name, synonym and taxonomic-placement cross-check
• IUCN Red List search — Apistogramma cacatuoides — Conservation-status and wild-provenance cross-check
• Australian Government — importing live ornamental fish — Australian import pathway and biosecurity requirements
• PIRSA — South Australian noxious fish list — South Australian possession, trade and release context
• Eschmeyer’s Catalog of Fishes current search — Apistogramma cacatuoides — Current accepted-name, synonym, distribution and habitat cross-check