Cichla orinocensis
Orinoco Peacock bass
Last revised 2026Edit this page
On this page10 sections
Quick factsEdit
Difficulty5 of 8 measures
- Space
- very large tank
- Water
- needs acidic water, kept steady
- Temp
- needs warm water, held steady
- Diet
- unknown
- Temperament
- territorial
- Social
- unknown
- Compatibility
- unknown
Other demands
Each of these can raise the rating on its own, whatever the measures above say.
- Hardiness
- hardy
- Needs 27 °C or warmer
- Needs a tank at least 2 m long
The Orinoco peacock bass, Cichla orinocensis, is a predatory cichlid from the Orinoco basin in Venezuela and Colombia and the Rio Negro in Brazil. One of the smaller peacock bass, it still grows to around 60 cm and needs a tank of at least 8 x 3 x 3 feet as an adult. It is territorial and moderately aggressive and will eat any tankmate small enough to be considered food.
Distribution
EditHabitat
Write a noteEditFound in varying habitats in the Amazon basin
Aquarium size
Write a noteEditOne of the smaller Peacock Bass, however a large tank is still required. Ultimately, this fish will require a tank of at least 8'x3'x3' (l x h x w) for an adult fish. Smaller aquaria can be used for younger specimens but realistically you should not acquire this fish if you cannot house it long term.
Maintenance
Write a noteEditWater conditions
EditTemperature: 27 – 29 °C81 – 84 °F
pH: 5.5 - 6.5
Hardness: 5 - 15°H
Diet
Write a noteEditPiscivorous in nature. The diet should consist of meaty foods such as prawn, mussel, lancefish, whitebait and other white fish.
Behaviour and compatibility
Write a noteEditTerritorial and moderately aggressive. Can be kept in species groups or with other large species such as arowana, stingrays, large cats and other large cichlids. An extremely large tank is required to achieve this with any degree of success.
Will eat tankmates small enough to be considered food.
Sexual dimorphism
Write a noteEditThe male is larger and develops a nuchal hump as he matures.
Reproduction
Write a noteEditLimited reports of breeding in the hobby.
Notes
EditDue to their large size, Peacock Bass are only really recommended for the experienced fishkeeper that can house them adequately. That said, they are a hardy and robust species that will adapt to a variety of conditions.
Peacock Bass are becoming much more available in the hobby and are often seen for sale as cute 2" babies, often tempting people into buying a fish they will not be able to care for in the long term.
Peacock Bass are also fished as a sport fish.
Distribution
Profile completeness16 of 24
67% complete
Also missing: aquarium size, photograph credits, taxonomic authority, etymology.
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