Definition
Rainbow fish are a diverse group of colorful freshwater fish found in Australia and New Guinea. They are known for their iridescent scales, which shimmer with various colors under light. Males often display more vibrant colors than females, especially during mating displays. These fish are popular in aquariums due to their peaceful nature and striking appearance. They generally prefer planted tanks with plenty of swimming space. Rainbow fish are relatively easy to care for, making them suitable for intermediate aquarists.