Triangle Cichlid (Uaru amphiacanthoides) Care Guide
Uaru amphiacanthoides is a large, peaceful Amazonian cichlid that needs substantial plant matter in its diet, described by Heckel in 1840.
Overview
Uaru amphiacanthoides, the triangle cichlid, is a large South American cichlid named for the dark triangular blotch on its flanks. It was described by Heckel in 1840. The species is valued as a food fish by local peoples and is also kept in the aquarium trade.
Taxonomy
- Family: Cichlidae
- Genus: Uaru
- Scientific name: Uaru amphiacanthoides
- Described by Heckel, 1840
Habitat
The species occurs in the Amazon River basin along the Amazon-Solimoes drainage from the Japura River to the Tapajos River, and in the middle and lower Negro River basin. It inhabits clear streams of the Amazon basin.
Tank requirements
- Minimum tank volume: 400 L (about 105 gal)
- Temperature: 26-30 °C (79-86 °F)
- pH: 5.0-7.0
- GH: up to about 5 °dGH (soft, per Seriously Fish)
- Group size: best kept in pairs or small groups
- Lifespan: 8-12 years
FishBase reports a maximum standard length of 25 cm, pH 5.0-7.0 and temperature 26-28 °C. Seriously Fish recommends a base footprint of at least 120 cm by 45 cm for a pair.
Diet
Although often described as herbivorous, FishBase records a relatively low trophic level (about 2.8) and notes the species feeds on worms, crustaceans and insects but needs plants as a supplement. In captivity it requires a substantial vegetable content, accepting prepared foods alongside frozen and live items.
Compatibility
Seriously Fish describes the species as surprisingly peaceful for its size. It mixes well with tetras, angelfish, Heros, Geophagus, Satanoperca and larger characins, provided tankmates tolerate warm water. It is best kept in pairs or small groups rather than singly.
Breeding
Uaru amphiacanthoides is a substrate spawner that spawns on flat rocks or bogwood. Wild-caught fish require very soft, acidic water, while captive-bred specimens are less demanding. Free-swimming fry feed on the parents' body slime, a behaviour similar to discus. FishBase notes parents care for up to 200 eggs and larvae.
Conservation status
IUCN Red List: Least Concern, assessed in 2018.