Buyer question
How big do Betta freshwater fish get?
Our Animal Library lists the Betta freshwater fish at 2.5–3 in (adult size).
Source: the Betta freshwater fish page in the Everybarn Animal Library. Betta freshwater fish in the Animal Library
The detail
Bettas, or Siamese fighting fish, come from shallow waters in Southeast Asia and are bred for spectacular fins and colors. They breathe air at the surface, which is why they survive in bowls, but they thrive only in heated, filtered tanks.
- Housing
- 5+ gal, heated and filtered
- Tank size
- 1 out of 5 (Small tank is fine)
What to weigh
Male bettas must be kept alone or with carefully chosen tankmates. Long-finned types are prone to fin rot in poor water.