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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 flow✓ SchoolingL-numbersWith photo Basic profiles too
Showing: Genus: Trigonostigma ✕

Trigonostigma 1 fish

Harlequin rasbora

Harlequin rasbora ≈

Rasboras & danios · TrigonostigmaStaple

  • 22–28°C
  • pH 5–7.5
  • Calm
  • 1.8 in
  • Mid
  • Mixed
  • Peaceful
  • 8+ group!
Peat swamp streams, Malay Peninsula and Sumatra

Harlequin rasbora

Trigonostigma heteromorpha

Peat swamp streams, Malay Peninsula and Sumatra · swamp or paddy

Temperature
22–28°C
pH
5–7.5
Adult size
1.8 in · 4.5 cm
Flow
Calm
Swims
Mid-water
Temperament
Peaceful
Diet
Omnivore
Group
8+
Typical price
$3–5
Rarity
Pet-store staple
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Photo: NasserHalaweh, CC BY-SA 4.0

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