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: River & region: Rio Tocantins ✕

Rio Tocantins 2 fish

Ember tetra

Ember tetra

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Tetras · HyphessobryconStaple

Ember tetra

Hyphessobrycon amandae

Rio Araguaia basin, Brazil · river

Temperature: 23–29°C
pH: 5.5–7
Adult size: 0.8 in · 2 cm
Flow: Calm
Swims: Mid-water
Temperament: Peaceful
Diet: Omnivore
Group: 8+
Typical price: $3–5
Rarity: Pet-store staple

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Photo: Cedricguppy - Loury Cédric, CC BY-SA 4.0

Peacock bass

Peacock bass

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Cichlids · CichlaLC

Predator. Eats any fish that fits in its mouth.

Peacock bass

Cichla kelberi

Araguaia and lower Tocantins drainages, Brazil · river

Temperature: 24–28°C
pH: 6–7.5
Adult size: 23 in · 58.5 cm
Flow: Gentle
Swims: Mid-water
Temperament: Semi-aggressive
Diet: Carnivore
Group: 1+
Status in the wild: Least concern

Predator. Eats any fish that fits in its mouth.

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Photo: Igor Balashov, CC BY 4.0

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