Rainbowfish

About

A freshwater rainbowfish from Australia, Melanotaenia splendida inornata is one of four recognized subspecies within the splendida complex, each separated by differences in color, patterning, and fin counts that can vary even between populations of the same form. That last point matters: the subspecies are best kept apart, as they will hybridize freely if mixed. New keepers should also know that what shows up in stores is almost always a washed-out juvenile. Full adult coloration can take well over a year to develop even on a good diet, so commitment is part of the deal here. The payoff is worth it, though. This is a peaceful, active species that does best in a shoal of at least six to eight fish. Males kept in groups will compete to look their best, and that social dynamic is genuinely fun to watch. The one caveat is speed. These are energetic swimmers, and slower or very small tankmates can find them a bit overwhelming. Pairing them with similarly sized rainbowfish, danios, barbs, or robust catfish tends to work well. Breeding is achievable for intermediate keepers, though raising the fry is trickier than getting the adults to spawn. A rewarding species for anyone willing to think long-term.