Freshwater fishes

The fish list

499 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: Home water: River ✕

River 8 fish

Clown loach

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Loaches · Chromobotia

25–30°C
pH 6–7.5
Gentle
12 in!
Bottom
Mixed
Peaceful
5+ group

Clown loach

Chromobotia macracanthus

Rivers of Borneo and Sumatra · river

Temperature: 25–30°C
pH: 6–7.5
Adult size: 12 in · 30 cm
Flow: Gentle
Swims: Bottom
Temperament: Peaceful
Diet: Omnivore
Group: 5+
Typical price: $8–20

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Photo: Tommy Kronkvist, CC BY-SA 4.0

Congo tetra

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Tetras · Phenacogrammus

23–27°C
pH 6–7.5
Gentle
3 in
Mid
Mixed
Peaceful
6+ group!

Congo tetra

Phenacogrammus interruptus

Congo River basin, DR Congo · river

Temperature: 23–27°C
pH: 6–7.5
Adult size: 3 in · 8 cm
Flow: Gentle
Swims: Mid-water
Temperament: Peaceful
Diet: Omnivore
Group: 6+
Typical price: $6–12

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Photo: André Karwath aka Aka, CC BY-SA 2.5

Ember tetra

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Tetras · HyphessobryconStaple

23–29°C
pH 5.5–7
Calm
0.8 in
Mid
Mixed
Peaceful
8+ group!

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

Glowlight tetra

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Tetras · HemigrammusStaple

24–28°C
pH 5.5–7.5
Calm
1.6 in
Mid
Mixed
Peaceful
6+ group!

Glowlight tetra

Hemigrammus erythrozonus

Essequibo River, Guyana · river

Temperature: 24–28°C
pH: 5.5–7.5
Adult size: 1.6 in · 4 cm
Flow: Calm
Swims: Mid-water
Temperament: Peaceful
Diet: Omnivore
Group: 6+
Typical price: $2–5
Rarity: Pet-store staple

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Photo: h080, CC BY-SA 2.0

Lemon tetra

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Tetras · HyphessobryconStaple

23–28°C
pH 5.5–7.5
Calm
1.8 in
Mid
Mixed
Peaceful
6+ group!

Lemon tetra

Hyphessobrycon pulchripinnis

Rio Tapajós basin, Brazil · river

Temperature: 23–28°C
pH: 5.5–7.5
Adult size: 1.8 in · 4.5 cm
Flow: Calm
Swims: Mid-water
Temperament: Peaceful
Diet: Omnivore
Group: 6+
Typical price: $3–5
Rarity: Pet-store staple

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Photo: Waugsberg, CC BY 2.5

Pygmy corydoras

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Corydoras · CorydorasStaple

22–26°C
pH 6–7.5
Calm
1 in
Bottom
Mixed
Peaceful
8+ group!

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

Rosy barb

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Barbs · PethiaStaple

18–25°C
pH 6–8
Gentle
4 in
Mid
Mixed
Peaceful
6+ group!

Rosy barb

Pethia conchonius

Rivers of northern India · river

Temperature: 18–25°C
pH: 6–8
Adult size: 4 in · 10 cm
Flow: Gentle
Swims: Mid-water
Temperament: Peaceful
Diet: Omnivore
Group: 6+
Typical price: $3–6
Rarity: Pet-store staple

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Photo: Usien, CC0

Sterba's corydoras

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Corydoras · Corydoras

24–29°C
pH 6–7.6
Gentle
2.8 in
Bottom
Mixed
Peaceful
6+ group!

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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