Betta
Betta splendens
FishFreshwater
- Care level
- Easy
- Temperament
- Semi-aggressive
- Minimum tank
- 25 L
- Maximum size
- 7 cm
- Temperature
- 24–30 °C
- pH
- 6–7.5
- Diet
- Carnivore
Care at a glance
The betta, or Siamese fighting fish, has character in the most literal sense: males will not tolerate each other, so keep only one. Its labyrinth organ lets it gulp air at the surface, so a calm, shallow, well-covered tank is all it needs; covered, because it can jump too.
Give it warm water without strong current, plus a few resting spots just below the surface, such as broad leaves. Long fins make it slow: fast tankmates and fin-nippers are poor company, and brightly coloured guppies can trigger aggression as well. As a carnivore it does best on small live or frozen foods.
Good to know
Best not combined with
Related species
Values are mainstream hobbyist guidance, not gospel — always watch what your own animals need.
In the BlubHub app you link your inhabitants to this database and see the care info next to your own water parameters.