Top Species
Boesemani Rainbowfish — yellow tail, blue head, classic rainbow appearance.
Threadfin Rainbowfish — small (1.5 inches), threadlike fins, mid-water schoolers.
Australian Rainbowfish — 4 inches, hardy, schooling.
Madagascar Rainbowfish — distinctive head shape, yellow/red coloration.
Tank Requirements
55 gallons minimum for medium-sized rainbowfish. Lots of swimming space.
pH 7.0-8.0 (Australian rainbows prefer slightly alkaline, hard water).
Schooling Behavior
Group of 6-8+ for proper schooling.
Males display brighter colors when females present. Group dynamics intensify their display.
- ✦Lighting — bright light brings out their full color spectrum
- ✦High oxygenation through surface agitation
- ✦Mostly fast-swimming — match with non-aggressive but active tank mates
Compatibility
Excellent with non-fin-nipping community fish: corydoras, tetras (large), peaceful gourami.
Avoid with slow-moving fancy goldfish or aggressive cichlids.