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: Flow: Gentle current ✕

Gentle current 5 fish

Dwarf neon rainbowfish

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Rainbowfish · Melanotaenia

24–28°C
pH 6.5–7.5
Gentle
2.4 in
Mid/top
Mixed
Peaceful
6+ group!

Dwarf neon rainbowfish

Melanotaenia praecox

Mamberamo River basin, New Guinea · stream

Temperature: 24–28°C
pH: 6.5–7.5
Adult size: 2.4 in · 6 cm
Flow: Gentle
Swims: Mid-water and top
Temperament: Peaceful
Diet: Omnivore
Group: 6+
Typical price: $6–12

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Photo: Raimond Spekking, CC BY-SA 4.0

Otocinclus

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Catfish · OtocinclusStaple

21–27°C
pH 6–7.5
Gentle
1.6 in
Bottom/mid
Veg
Peaceful
6+ group!

Otocinclus

Otocinclus vittatus

Streams across South America · stream

Temperature: 21–27°C
pH: 6–7.5
Adult size: 1.6 in · 4 cm
Flow: Gentle
Swims: Bottom and mid-water
Temperament: Peaceful
Diet: Grazer
Group: 6+
Typical price: $4–7
Rarity: Pet-store staple

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Photo: No machine-readable author provided. Chle assumed (based on copyright claims)., CC BY-SA 3.0

Panda corydoras

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Corydoras · CorydorasStaple

20–25°C
pH 6–7.5
Gentle
2 in
Bottom
Mixed
Peaceful
6+ group!

Panda corydoras

Corydoras panda

Clear Andean foothill streams, Peru · stream

Temperature: 20–25°C
pH: 6–7.5
Adult size: 2 in · 5 cm
Flow: Gentle
Swims: Bottom
Temperament: Peaceful
Diet: Omnivore
Group: 6+
Typical price: $5–9
Rarity: Pet-store staple

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Photo: Chronotopian, CC BY-SA 3.0

Rummynose tetra

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Tetras · HemigrammusStaple

24–28°C
pH 5.5–7
Gentle
2 in
Mid
Mixed
Peaceful
8+ group!

Rummynose tetra

Hemigrammus rhodostomus

Lower Amazon and Rio Negro, Brazil · blackwater stream

Temperature: 24–28°C
pH: 5.5–7
Adult size: 2 in · 5 cm
Flow: Gentle
Swims: Mid-water
Temperament: Peaceful
Diet: Omnivore
Group: 8+
Typical price: $3–6
Rarity: Pet-store staple

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Photo: Gavinevans, CC BY-SA 3.0

White cloud mountain minnow

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Rasboras & danios · TanichthysStaple

14–22°C!
pH 6–8
Gentle
1.6 in
Top/mid
Mixed
Peaceful
6+ group!

White cloud mountain minnow

Tanichthys albonubes

Mountain streams near Guangzhou, China · stream

Temperature: 14–22°C
pH: 6–8
Adult size: 1.6 in · 4 cm
Flow: Gentle
Swims: Top and mid-water
Temperament: Peaceful
Diet: Omnivore
Group: 6+
Typical price: $2–4
Rarity: Pet-store staple

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Photo: Ethmostigmus, CC BY-SA 4.0

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