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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: Genus: Astronotus ✕

Astronotus 1 fish

Oscar

Oscar ≈

Cichlids · Astronotus

  • 22–28°C
  • pH 6–7.5
  • Calm
  • 13 in!
  • Mid/bottom
  • Meat
  • Aggressive!

Predator. Eats any fish that fits in its mouth.

Slow rivers and floodplains of the Amazon

Oscar

Astronotus ocellatus

Slow rivers and floodplains of the Amazon · flooded forest

Temperature
22–28°C
pH
6–7.5
Adult size
13 in · 33 cm
Flow
Calm
Swims
Mid-water and bottom
Temperament
Aggressive
Diet
Carnivore
Group
1+
Typical price
$15–40

Predator. Eats any fish that fits in its mouth.

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Photo: Jón Helgi Jónsson (Amything), CC BY-SA 3.0

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