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: River & region: Amazon ✕

Amazon 5 fish

Discus

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Cichlids · Symphysodon

28–31°C!
pH 5–7
Calm
7 in
Mid
Meat
Peaceful
5+ group

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Symphysodon aequifasciatus

Floodplain lakes of the Amazon basin · flooded forest

Temperature: 28–31°C
pH: 5–7
Adult size: 7 in · 18 cm
Flow: Calm
Swims: Mid-water
Temperament: Peaceful
Diet: Carnivore
Group: 5+
Typical price: $60–200

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Photo: H. Zell, CC BY-SA 3.0

Marbled hatchetfish

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Tetras · CarnegiellaStaple

24–28°C
pH 5.5–7
Calm
1.4 in
Top
Meat
Peaceful
6+ group!

Jumper. Keep a tight lid on the tank.

Marbled hatchetfish

Carnegiella strigata

Amazon basin, Peru and Brazil · blackwater stream

Temperature: 24–28°C
pH: 5.5–7
Adult size: 1.4 in · 3.5 cm
Flow: Calm
Swims: Top
Temperament: Peaceful
Diet: Carnivore
Group: 6+
Typical price: $4–8
Rarity: Pet-store staple

Jumper. Keep a tight lid on the tank.

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Photo: SOK, CC BY-SA 4.0

Neon tetra

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Tetras · ParacheirodonStaple

20–26°C
pH 5–7
Calm
1.4 in
Mid
Mixed
Peaceful
6+ group!

Neon tetra

Paracheirodon innesi

Upper Amazon basin: Peru, Colombia, Brazil · blackwater stream

Temperature: 20–26°C
pH: 5–7
Adult size: 1.4 in · 3.5 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: Holger Krisp, CC BY 3.0

Serpae tetra

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Tetras · HyphessobryconStaple

22–28°C
pH 5.5–7.5
Calm
1.8 in
Mid
Mixed
Semi-agg.!
6+ group!

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

Serpae tetra

Hyphessobrycon eques

Amazon and Paraguay basins · river

Temperature: 22–28°C
pH: 5.5–7.5
Adult size: 1.8 in · 4.5 cm
Flow: Calm
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: Douglas Lopes, CC BY 4.0

Golden pencilfish

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Tetras · NannostomusStaple

24–28°C
pH 5.5–7.5
Calm
1.8 in
Top/mid
Mixed
Peaceful
6+ group!

Golden pencilfish

Nannostomus beckfordi

Amazon basin and the Guianas · blackwater stream

Temperature: 24–28°C
pH: 5.5–7.5
Adult size: 1.8 in · 4.5 cm
Flow: Calm
Swims: Top and mid-water
Temperament: Peaceful
Diet: Omnivore
Group: 6+
Typical price: $3–6
Rarity: Pet-store staple

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