Species · Cichlids
Apistogramma
Apistogramma spp.
The "apisto" — a characterful dwarf cichlid with huge personality in a small body. Most want soft, warm, acidic water and become territorial when breeding; identify your species, as needs vary.
Difficulty: Intermediate Cichlid setup ✓ Fact-checked care guide
Quick facts
| Adult size | ~7 cm / 3 in (males); females ~5 cm / 2 in |
|---|---|
| Minimum tank | ~55 L / 15 US gal for a pair — SeriouslyFish recommends a 60 × 30 cm base |
| Temperature | 25–28 °C / 77–82 °F (within the A. cacatuoides range of 22–29 °C / 72–84 °F) |
| pH | 5.0–6.5 (soft, acidic — species vary; many want it softer/more acidic) |
| Hardness | 0–15 dGH (soft; species-dependent) |
| Filtration & flow | Cycled, gentle filtration; a soft, warm, structured tank with caves |
| Diet | Carnivore — quality micro-pellet/flake plus plenty of small live/frozen foods |
| Social | A pair or a one-male harem in a well-structured tank |
| Temperament | A territorial dwarf cichlid, especially when breeding |
| Lifespan | 3–5 years |
Overview
Apistogramma ("apistos") are a huge genus of small, intensely characterful South American dwarf cichlids. A pair defending a little territory, the male displaying in full colour, is one of the most rewarding sights in the hobby — big personality in a 5–7 cm fish.
The catch is that "Apistogramma" is dozens of species with differing needs, and most want soft, warm, acidic water. The figures here are for the hardy, beginner-friendly cockatoo apisto (A. cacatuoides) — always identify your species and check its specifics.
💷 Costing it out? See how much a apistogramma really costs to keep — the apistogramma itself is usually the cheapest part.
Water & tank
Most apistos want soft, warm, acidic water — for A. cacatuoides, pH 5.0–6.5 and 0–15 dGH at 25–28 °C / 77–82 °F (some species need it softer and more acidic still). They love a structured tank with caves, wood and leaf litter to claim as territory.
A pair is happy in ~55 L / 15 US gal (SeriouslyFish recommends a 60 × 30 cm base), cycled and well-planted with plenty of visual barriers.
Feeding
A carnivore — a quality micro-pellet/flake base plus generous small live/frozen foods (baby brine shrimp, daphnia, bloodworm), which really bring out colour and breeding condition.
Behaviour & tankmates
Bottom-oriented and territorial, especially when breeding — give each pair its own space and structure. They can share a tank with peaceful upper-water dither fish (small tetras) that suit the same soft, warm water.
Keep one male per small tank unless it's large and well-divided; rival males clash. A breeding female becomes fiercely defensive of her brood.
What to expect
A settled male displays with flared fins and vivid colour to claim territory and court; a female turns bright yellow and guards a cave when breeding. This territorial theatre is the whole appeal — just give them room.
Myths, kindly busted
“All apistos have the same care.”
"Apistogramma" is a large genus with species-specific needs — identify yours; some want much softer, more acidic water than others.
“Dwarf cichlids are peaceful community fish.”
They are small but territorial, especially when breeding — plan for that with space, structure and suitable tankmates.
🐟 Did you know? — Apistogramma fun facts
Little true delights about the apistogramma — each one checked against a named source, no pet-shop myths.
- In the cockatoo cichlid the female alone tends the eggs and fry, and can turn so aggressive that in small tanks the larger male may need removing. SeriouslyFish
- Male cockatoo cichlids are bigger and far more colourful than females, and grow dramatically extended, spiky dorsal rays that suggest a cockatoo's crest. SeriouslyFish
When to act
We triage, not diagnose — but these are worth a closer look (starting with a water test):
- Relentless aggression — usually two males, or too little space/structure; separate rivals and add visual barriers.
- Faded colour, hiding or refusing food — check water is soft, warm and stable, and that tankmates aren't bullying them.
Heading to a vet? Print the Apistogramma vet-prep sheet — what to bring, what to tell them, and the questions to ask.
Sources & further reading
- SeriouslyFish — Apistogramma cacatuoides (cockatoo apisto) — Adult male ~75 mm / female ~50 mm SL; recommended 60 × 30 cm base; temperature 22–29 °C / 72–84 °F; pH 5.0–6.0 (soft/acidic); hardness 0–15 dGH; a territorial dwarf cichlid; representative figures — Apistogramma needs are species-specific.
Written & fact-checked by The Finfern Team against the sources above — kind, general guidance, not a diagnosis. If something looks wrong, test your water and, if it persists, contact a fish-savvy vet.
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