Cockatoo / crested Apistogramma tank mates
A small apistogramma with dramatic dorsal fin extensions on males. Needs soft warm water and a harem setup: one male and two or more females.
Common mistakeHousing one male with one female in a short 60L is how keepers invent relentless harassment. Males need multiple females or a carefully managed pair with space and caves. A lonely 'show male' plus one female in a nano is a stress machine, not a breeding plan.
Each name below opens a pair check with Cockatoo / crested Apistogramma. That check is the decision, not the list itself.
Usually safer companions
Conservative shortlist from this profile. Open a pair page before you buy.
None listed here. Use the pair checker with species you are considering.
Risky or situational
May work with more water, a mature system, or a species-only setup. Read the pair page before you experiment.
Angelfish reaches 20cm and is flagged predatory or as likely to eat small fish. Adult-size Cockatoo / crested Apistogramma at 7cm is inside that gape range. Both species defend territory. The pairing needs a long footprint and rockwork or planting that breaks the sightline between two defended spots. Angelfish is rated semi-aggressive, so expect chasing, fin damage, or display behaviour directed at Cockatoo / crested Apistogramma. Run the pair checker before stocking.
Both species defend territory. The pairing needs a long footprint and rockwork or planting that breaks the sightline between two defended spots. Betta is rated semi-aggressive, so expect chasing, fin damage, or display behaviour directed at Cockatoo / crested Apistogramma. Run the pair checker before stocking.
Marked risky or situational on the profile. Tank length and group size change the outcome more than a temperament label does.
Marked risky or situational on the profile. Tank length and group size change the outcome more than a temperament label does.
Both species defend territory. The pairing needs a long footprint and rockwork or planting that breaks the sightline between two defended spots. Run the pair checker before stocking.
Marked risky or situational on the profile. Tank length and group size change the outcome more than a temperament label does.
Both species defend territory. The pairing needs a long footprint and rockwork or planting that breaks the sightline between two defended spots. Run the pair checker before stocking.
Marked risky or situational on the profile. Tank length and group size change the outcome more than a temperament label does.
Marked risky or situational on the profile. Tank length and group size change the outcome more than a temperament label does.
Marked risky or situational on the profile. Tank length and group size change the outcome more than a temperament label does.
Fish to avoid with Cockatoo / crested Apistogramma
Predation, aggression, or space rules on this profile. Treat these as poor default mixes.
African Cichlid reaches 15cm and is flagged predatory. Cockatoo / crested Apistogramma at 7cm is prey-sized for it.
Oscar reaches 35cm and is flagged predatory. Cockatoo / crested Apistogramma at 7cm is prey-sized for it. Oscar needs at least 300L, far above the 100L minimum for Cockatoo / crested Apistogramma. The tank that houses one stresses the other.
Tank size and groups
- Published minimum for Cockatoo / crested Apistogramma: 100L. Group minimum 1 .
- Compatibility changes when the tank is too short for turning, too little for a real school, or too warm for one species and not the other. That is why pair checks include tank context, not only temperament.
- Nearest litre hub to this minimum: 100L hub.
Easier alternatives to consider
Hardier first-tank names from the library. Still read the profile. Not a substitute for reading this one.
Plan before you buy
Start a pair check with Cockatoo / crested Apistogramma, or open a starter plan with the top safer companions in the builder.
Tank hubs: 100L
Related reading
Guides that list other fish with the same trait, so you can plan around the group rather than one row.
- Fin-nipping fish →
Cockatoo / crested Apistogramma is on this list. Matters more with long-finned tank mates.
- Fish that eat smaller tank mates →
Cockatoo / crested Apistogramma may eat anything that fits in its mouth as it grows.
Filtration & heating
A 100L minimum tank for Cockatoo / crested Apistogramma needs a filter rated for at least 400L/hr turnover and a heater maintaining 24–30°C.
Similar fish (same category)
- Apistogramma Macmasteri · min 100L
- Checkerboard cichlid · min 100L
- Kribensis · min 100L
- Bolivian Ram · min 110L
- Agassiz’s dwarf cichlid · min 80L
- Apistogramma Borellii · min 80L
- Apistogramma Trifasciata · min 80L
- German Blue Ram · min 80L
Cockatoo / crested Apistogramma tank mates — quick answers
- What fish can live with Cockatoo / crested Apistogramma?
- This hub has no “usually safer” (GOOD) companions for Cockatoo / crested Apistogramma. Workable neighbours sit in caution — for example Angelfish, Betta, Chili Rasbora, Corydoras Catfish, Dwarf Gourami, Ember Tetra. Treat every name as a pair check, not a shopping list.
- What tank mates should you avoid with Cockatoo / crested Apistogramma?
- Avoid African Cichlid, Oscar based on size, temperament, or predation risk on this profile.
- What size tank do Cockatoo / crested Apistogramma need for a community?
- 100L is the planning floor for adult swimming space and bioload. A 122L+ tank is the more comfortable long-term footprint. Length and depth matter as much as raw litres for active or territorial fish.