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 Madeira ✕

Rio Madeira 3 fish

Black skirt tetra

Black skirt tetra

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Tetras · GymnocorymbusStaple

Fin nipper. Keep it away from long-finned fish.

Black skirt tetra

Gymnocorymbus ternetzi

Paraguay and Guaporé basins · river

Temperature: 21–27°C
pH: 6–7.5
Adult size: 2.4 in · 6 cm
Flow: Gentle
Swims: Mid-water
Temperament: Semi-aggressive
Diet: Omnivore
Group: 6+
Typical price: $3–5
Rarity: Pet-store staple

Fin nipper. Keep it away from long-finned fish.

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Photo: emptyvi, CC BY-SA 3.0

Pygmy corydoras

Pygmy corydoras

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Corydoras · CorydorasStaple

Pygmy corydoras

Corydoras pygmaeus

Rio Madeira basin, Brazil · river

Temperature: 22–26°C
pH: 6–7.5
Adult size: 1 in · 2.5 cm
Flow: Calm
Swims: Bottom
Temperament: Peaceful
Diet: Omnivore
Group: 8+
Typical price: $4–7
Rarity: Pet-store staple

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Photo: AquaTuer, CC BY-SA 4.0

Sterba's corydoras

Sterba's corydoras

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Corydoras · Corydoras

Sterba's corydoras

Corydoras sterbai

Rio Guaporé, Brazil and Bolivia · river

Temperature: 24–29°C
pH: 6–7.6
Adult size: 2.8 in · 7 cm
Flow: Gentle
Swims: Bottom
Temperament: Peaceful
Diet: Omnivore
Group: 6+
Typical price: $6–12

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Photo: Matthew Mannell, Public domain

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