Good zebra danio tank mates are generally peaceful, active fish that tolerate similar freshwater temperatures and will not be stressed by a fast-moving school. Suitable rasboras, some barbs and compatible bottom-dwellers can work depending on water chemistry. Avoid slow long-finned fish that may be harassed or nipped, and keep zebra danios in a proper group so their activity is directed toward their own school.
Zebra danios are not usually aggressive, but their speed makes them a poor fit for some calm community fish. Compatibility is about activity level as well as temperament.
Match activity level
Fast schooling fish can repeatedly disturb slower species even without deliberate aggression. Choose companions comfortable in an energetic tank.
Keep the danio group large enough
The RSPCA identifies danios as shoaling fish and recommends groups of six or more for shoaling tropical fish. A proper group helps normal social behaviour.
Temperature matters
Zebra danios are often comfortable toward the cooler end of common tropical temperatures. Avoid forcing a very warm-water species into a compromise just because both are sold as tropical.
Protect slow fins
Long-finned slow fish can become targets for curiosity or nipping in a busy danio tank.
Related aquarium tools and guides
Frequently asked questions
Can zebra danios live with Corydoras?
Often, if the chosen Corydoras species shares a suitable temperature range.
Can zebra danios live with bettas?
It is not an ideal default pairing because danios are fast and may stress or nip long-finned bettas.
Do zebra danios need a school?
Yes. They are shoaling fish and should be kept as a proper group.
Sources and further reading
This guide separates general aquarium arithmetic from fish-welfare decisions. For species-specific limits, always check the needs of the fish you intend to keep.