Vanessa Voltolina wrote in her article for the PetMD that there are more than 50 species of rainbowfish, but the neon dwarf rainbowfish, Madagascar rainbowfish, salmon red rainbowfish, and threadfin rainbowfish are the common species that are made into pets. This fish got its name because the color of its scales changes when hit by light, and it can “be a shiny silver or a blue and yellow combination,” Voltolina explained.
Some rainbowfish owners may not notice it, but the colors of the scales develop as the