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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.

EndangeredRarePopularPeacefulSmall (6 cm or less)Calm waterStrong flowSchoolingL-numbersWith photo Basic profiles too
Showing: Rarity: Common ✕

Common 19 fish

Pea puffer

Pea puffer ≈

Other fish · Carinotetraodon

  • 24–28°C
  • pH 7–8
  • Calm
  • 1 in
  • Mid
  • Meat
  • Aggressive!

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

Rivers of Kerala, southwest India

Pea puffer

Carinotetraodon travancoricus

Rivers of Kerala, southwest India · river

Temperature
24–28°C
pH
7–8
Adult size
1 in · 2.5 cm
Flow
Calm
Swims
Mid-water
Temperament
Aggressive
Diet
Carnivore
Group
1+
Typical price
$6–12

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

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Photo: 5snake5, CC0

Pearl gourami

Pearl gourami ≈

Gouramis & bettas · Trichopodus

  • 24–28°C
  • pH 6–7.5
  • Calm
  • 5 in
  • Top/mid
  • Mixed
  • Peaceful

Long fins. Fin nippers will pick on it.

Peat swamps of Malaysia, Sumatra and Borneo

Pearl gourami

Trichopodus leerii

Peat swamps of Malaysia, Sumatra and Borneo · swamp or paddy

Temperature
24–28°C
pH
6–7.5
Adult size
5 in · 12 cm
Flow
Calm
Swims
Top and mid-water
Temperament
Peaceful
Diet
Omnivore
Group
1+
Typical price
$7–14

Long fins. Fin nippers will pick on it.

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Photo: BEDO (Thailand), CC BY-SA 4.0

Sterba's corydoras

Sterba's corydoras ≈

Corydoras · Corydoras

  • 24–29°C
  • pH 6–7.6
  • Gentle
  • 2.8 in
  • Bottom
  • Mixed
  • Peaceful
  • 6+ group!
Rio Guaporé, Brazil and Bolivia

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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