Tank mates for a betta

Who can share a tank with a male betta, and who can't.

Betta (male)Bronze corydorasHarlequin rasboraEmber tetraAmano shrimp

A betta on its own needs at least 5 gallons (19 litres), a heater set to 76 to 82°F (24 to 28°C) and a gentle filter. For tank mates, go to 10 gallons or more.

Usually fine

  • Corydoras and kuhli loaches, which stay on the bottom and out of the way.
  • Calm, plain schoolers such as harlequin rasboras and ember tetras.
  • Nerite snails and amano shrimp.

Avoid

  • Guppies. Their long, bright fins trigger attacks.
  • Tiger barbs, which shred a betta's fins.
  • Gouramis and other male bettas, which fight over territory.

Bettas vary. Some ignore everything and some attack anything that moves, so watch closely for the first week and have a spare tank ready.

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