How big do Rainbowfish get?
The majority of rainbowfish species have a length of less than 12 centimeters (4.7 inches), with some measuring less than 6 centimeters (2.4 inches), while one species, Melanotaenia vanheurni, has a length of up to 20 centimeters (7.9 inches). Rainbowfish inhabit a variety of freshwater habitats, including lakes, rivers, and swamps.
Can Rainbowfish live together?
Rainbowfish are shoalers and should be kept in groups of six or more for best results. Different species can be kept together, as can larger tetras, peaceful barbs, rasboras, danios, catfish, and even non-aggressive cichlids like Kribensis.