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Encyclopedia / Cichlids / Peacock bass
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Variations

1 kinds · tap one for a closer look

Peacock bass

Cichla ocellaris · Butterfly peacock bass, Cichla, Cichla ocellaris, Peacock bass cichlid

Aggressive predator; eats any fish it can swallow.

Cichla ocellaris lives only in the Guianas. Most fish sold as "peacock bass" are other Cichla species.

Local price coming soon
· real AED shop prices, never conversions
74 cmAdult size ✓
24–27 °CTemperature ✓
6.5–7pH ✓
3400 LSmallest tank ✓
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✕Not recommended
  • Peacock bass eats animals up to about 25 cm. Neon tetra only grows to 2.5 cm.
  • Only a narrow temperature range suits both: 24–25 °C.
✕Not recommended
  • Peacock bass eats animals up to about 25 cm. Cardinal tetra only grows to 3 cm.
✕Not recommended
  • Peacock bass eats animals up to about 25 cm. Black neon tetra only grows to 3.2 cm.
!With conditions
  • Rift lake cichlids like frontosa need hard, alkaline water and a busy, cichlid-only tank.
  • Their pH needs don't quite meet (6.5–7 vs 8–9). Aim between the two and keep it steady.
!With conditions
  • Only a narrow pH range suits both: exactly 7.
✓Compatible
✓Compatible
✓Compatible
✓Compatible
✓Compatible

44 species in our list are a good match.

Facts checked against sources on 16 Oct 2026. ✓ means a source backs it; ? means no reliable source yet. See sources

Care and water

Hardness ✓0–15 dGH
Group size ?Can live alone
Temperament ✓Aggressive
Swims at ?Middle
Care level ✓Hard
Diet Carnivore
Lifespan ?Unknown
Size in shops 5–10 cm
Growth Fast

Behavior

Aggressive predator; eats any fish it can swallow. Keep alone or with similarly large fish.

Not for home aquariums. This fish grows far too big for any home tank. It needs a pond-sized system of thousands of litres, so please don't buy one as a baby.

Food

Prawns, fish pieces and large frozen foods.

Tap a food to see what it is.

Male or female

Males grow larger and develop a hump on the forehead (nuchal hump) as they mature.

Health

Common problems. Tap one to see the signs. This is a guide, not a diagnosis.

Breeding

Open substrate spawner ·

Rarely bred in aquaria. In the wild pairs spawn on a flat, cleaned stone in shallow water; both parents guard, and after hatching they carry the larvae in their mouths to pits dug as nests.

Pairing

Grow out 6 juveniles and let a pair form; separate the pair if others are harassed.

Setup

A 1500 L tank with a sponge or gentle filter, flat slate or rocks as spawning surfaces and a tight lid.

What starts it

Warm, clean water, frequent water changes and protein-rich food.

Eggs

About 9,000-15,000 eggs per kg of female; sticky 1.4 mm eggs hatch in about 78 hours at 28 °C. Spawns about every two months, with a peak at the start of the rainy season.

Raising the fry

Parents move the wrigglers to pits and guard the free-swimming fry; feed newly hatched brine shrimp and crushed flake.

Common mistakes
  • Tank too small for a pair
  • Dirty water
  • Not removing the weaker partner when a pair fights
Full breeding guide, day-by-day plan and simulator →

Where it lives in the wild

Amazon RiverGuiana Shield creeksLoading the map…
Native range (rough area)Centre of the rangePlaces on the World Map
RegionNorthern South America – Guianas
Rivers and lakesEssequibo and coastal rivers of Guyana and Suriname
HabitatLarge rivers and lakes
Native rangeAbout 500 km across
Open on the World Map

The story of the peacock bass

A large predatory cichlid from northern South America with an eye-spot (ocellus) on the tail; a prized sport fish. Sold as cute 5 cm juveniles but grows to over 70 cm and needs a public-aquarium-sized tank.

Bloch and Schneider described this species in 1801, making it one of the first peacock basses known to science. Its fighting spirit made it a prized game fish, and it has been introduced to warm waters well outside South America. In aquariums it needs a very large tank, as it grows quickly.

First described by Marcus E. Bloch & Johann G. Schneider in 1801.

  • It has a dark eyespot on its tail.
  • It is a popular sport fish.
  • It can exceed 60 cm.

Sources

16 facts checked with sources

  • Scientific name

    Valid, but since Kullander & Ferreira 2006 C. ocellaris is restricted to the Guianas (plus upper Rio Branco). Most 'peacock bass' in the trade are other Cichla species (e.g. C. monoculus, C. kelberi, C. orinocensis, C. temensis) sold under the old name. Suggest the site page be 'Cichla spp. (peacock bass)' or keep C. ocellaris with a misidentification warning. Seriously Fish still uses the broad old range (Colombia, Venezuela).

    FishBase: Cichla ocellaris summary · Kullander & Ferreira 2006, A review of the South American cichlid genus Cichla, Ichthyol. Explor. Freshwaters 17(4)
  • Familycorrected

    Legacy has no family field.

    FishBase: Cichla ocellaris summary
  • Sizecorrected

    FishBase max 74 cm TL; Seriously Fish ~75 cm (labelled SL, but it matches the 74 cm TL record). Museum specimens of the strict species reach 41.4 cm SL. Legacy 45 cm is a fair typical aquarium size but the sourced maximum is 74 cm TL.

    FishBase: Cichla ocellaris summary · Seriously Fish: Cichla ocellaris · Kullander & Ferreira 2006, A review of the South American cichlid genus Cichla, Ichthyol. Explor. Freshwaters 17(4)
  • Temperaturecorrected

    Both sources 24-27; legacy 30 is high.

    Seriously Fish: Cichla ocellaris · FishBase: Cichla ocellaris summary
  • pHcorrected

    Legacy 6-7.5 is wider.

    Seriously Fish: Cichla ocellaris
  • Hardnesscorrected

    Legacy has no hardness.

    Seriously Fish: Cichla ocellaris
  • Smallest tankcorrected

    10 x 3 x 4 ft = 305 x 91 x 122 cm = 3,386 L (~3,400 L). Seriously Fish also says 'More suited to public aquaria'. Legacy 1,500 L is less than half.

    Seriously Fish: Cichla ocellaris
  • Group size

    No minimum given; legacy 1 (single fish) is not contradicted.

    Seriously Fish: Cichla ocellaris
  • TemperamentSeriously Fish: Cichla ocellaris
  • Swimming level

    No source names a swimming level.

    FishBase: Cichla ocellaris summary
  • Care level

    Seriously Fish 'Difficult' (space); otherwise it calls it 'hardy and robust'.

    Seriously Fish: Cichla ocellaris
  • Where it livescorrected

    Legacy has no range field; legacy story says 'northern South America', which is right. Seriously Fish's wider list (Colombia, Venezuela) follows the pre-2006 concept.

    FishBase: Cichla ocellaris summary · Kullander & Ferreira 2006, A review of the South American cichlid genus Cichla, Ichthyol. Explor. Freshwaters 17(4) · Seriously Fish: Cichla ocellaris
  • Male or female

    Agrees with legacy.

    Seriously Fish: Cichla ocellaris
  • Breeding

    Agrees with legacy.

    Seriously Fish: Cichla ocellaris · FishBase: Cichla ocellaris summary
  • Eggs and youngcorrected

    Legacy 2000-3000 eggs is not in a source; a 1-2 kg female would release roughly 9,000-30,000. Note the FishBase figures may come from introduced/aquaculture fish of uncertain species.

    FishBase: Cichla ocellaris summary
  • Story

    Tail eye-spot is standard for Cichla (the genus diagnosis on FishBase concerns bars and blotches); not separately quoted.

    Seriously Fish: Cichla ocellaris · FishBase: Cichla ocellaris summary