Freshwater fishes

The fish list

542 species, each with the water it needs, who it gets along with, and where it comes from. Find one, or browse by family, genus or river.

Endangered Rare Popular Peaceful Small (6 cm or less)Calm water Strong flow Schooling L-numbers With photo Basic profiles too

Showing: Genus: Acarichthys ✕

Acarichthys 1 fish

Threadfin acara

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Cichlids · AcarichthysLC

Threadfin acara

Acarichthys heckelii

Northern Amazon basin (Colombia, Peru, Brazil) and Essequibo, Guyana · river

Temperature: 24–30°C
pH: 6–8
Adult size: 8 in · 20 cm
Flow: Calm
Swims: Mid-water
Temperament: Semi-aggressive
Diet: Omnivore
Group: 2+
Status in the wild: Least concern

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