Cichla monoculus

Tucanare Peacock Bass

Classification

Cichlidae. Subfamily: Cichlinae

Distribution

Colombia, French Guiana, Peru and Brazil. It’s been recorded in the Rio Solimões, Rio Oyapock and Rio Araguari.

Habitat

Found in varying habitats in the Amazon basin

Maximum Standard Length

32″ (80cm)

Aquarium SizeTop ↑

More suited to public aquaria, otherwise a very large tank required. Ultimately, this fish will require a tank of at least 10’x3’x4′ (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

This species requires a lot of swimming space, so it is a good idea to furnish the tank fairly sparsely. Large pieces of bogwood and robust plants are recommended. These are large messy fish and require filtration that is up to the job. External or sump filtration should be considered.

Water Conditions

Temperature: 77 – 82°F (25 – 28°C)

pH: 6.5 – 7.5

Hardness: Up to 15°H

Diet

Piscivorous in nature. The diet should consist of meaty foods such as prawn, mussel, lancefish, whitebait and other white fish.

Behaviour and CompatibilityTop ↑

Territorial 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

The male is larger and develops a nuchal hump as he matures.

Reproduction

Limited reports of breeding in the hobby. As many as 700 – 800 fry may be produced. In the wild, they spawn more than once per year.

NotesTop ↑

Due 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.