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: Stream ✕

Stream 5 fish

Cherry barb

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Barbs · PuntiusStaple

23–27°C
pH 6–7.5
Calm
2 in
Mid/bottom
Mixed
Peaceful
6+ group!

Cherry barb

Puntius titteya

Shaded forest streams, Sri Lanka · stream

Temperature: 23–27°C
pH: 6–7.5
Adult size: 2 in · 5 cm
Flow: Calm
Swims: Mid-water and bottom
Temperament: Peaceful
Diet: Omnivore
Group: 6+
Typical price: $3–5
Rarity: Pet-store staple

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Photo: NasserHalaweh, CC BY-SA 4.0

Cherry shrimp

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Shrimp & snails · NeocaridinaStaple

18–26°C
pH 6.5–8
Calm
1 in
Bottom
Veg
Peaceful
10+ group!

Invertebrate. Many fish will eat it, so choose tank mates with care.

Cherry shrimp

Neocaridina davidi

Streams of Taiwan and eastern China · stream

Temperature: 18–26°C
pH: 6.5–8
Adult size: 1 in · 2.5 cm
Flow: Calm
Swims: Bottom
Temperament: Peaceful
Diet: Grazer
Group: 10+
Typical price: $2–5
Rarity: Pet-store staple

Invertebrate. Many fish will eat it, so choose tank mates with care.

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Photo: TonyZimbinski, CC BY-SA 4.0

German blue ram

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Cichlids · Mikrogeophagus

27–30°C!
pH 5–7
Calm
2.4 in
Bottom/mid
Mixed
Peaceful
2+ group

German blue ram

Mikrogeophagus ramirezi

Llanos savanna streams, Orinoco basin · stream

Temperature: 27–30°C
pH: 5–7
Adult size: 2.4 in · 6 cm
Flow: Calm
Swims: Bottom and mid-water
Temperament: Peaceful
Diet: Omnivore
Group: 2+
Typical price: $12–25

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Photo: Eric Mengel, Public domain

Guppy

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Livebearers · PoeciliaStaple

22–28°C
pH 7–8.5
Calm
2 in
Top/mid
Mixed
Peaceful
3+ group

Long fins. Fin nippers will pick on it.

Guppy

Poecilia reticulata

Trinidad and northern Venezuela · stream

Temperature: 22–28°C
pH: 7–8.5
Adult size: 2 in · 5 cm
Flow: Calm
Swims: Top and mid-water
Temperament: Peaceful
Diet: Omnivore
Group: 3+
Typical price: $2–8
Rarity: Pet-store staple

Long fins. Fin nippers will pick on it.

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Photo: Holger Krisp, CC BY 3.0

Platy

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Livebearers · XiphophorusStaple

20–26°C
pH 7–8.2
Calm
2 in
Mid/top
Mixed
Peaceful
3+ group

Platy

Xiphophorus maculatus

Atlantic slope of Mexico and Central America · stream

Temperature: 20–26°C
pH: 7–8.2
Adult size: 2 in · 5 cm
Flow: Calm
Swims: Mid-water and top
Temperament: Peaceful
Diet: Omnivore
Group: 3+
Typical price: $2–5
Rarity: Pet-store staple

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