How to Care for a Betta Fish
Vet-reviewed via PetHealth+ · Last reviewed June 2026
Bettas need a heated, filtered tank of at least 19 litres (5 gallons) — not a bowl. Stable warm water and regular partial water changes prevent disease.
Tank size
Larger is easier to maintain stable water quality.
Heating
78–80°F (25–27°C) consistently.
Plants and enrichment
Live or silk plants provide hiding places.
Related: Betta feeding guide
Frequently asked questions
Can bettas live with other fish?
Often best alone — tank mates need careful selection and space.
How often change water?
Partial changes weekly; test ammonia and nitrite.
Why are betta fins clamped?
Cold water, poor quality, or illness — check parameters.
Do bettas jump?
Yes — use a lid.