The rainbow runner (elagatis bipinnulata), also known as the rainbow yellowtail, spanish jack and hawaiian salmon, is a common species of pelagic marine fish of the jack family, carangidae. the species is widespread throughout the tropical and subtropical waters of the world, inhabiting both coastal and offshore areas. the species is the only member of the genus elagatis, which was created 15 years after its initial description, and is closely related to the amberjacks. the rainbow runner is easily distinguished by its body shape, and the brilliant colouration which gives the fish its name. it is a fast-swimming predator, taking small fish, cephalopods, and a wide variety of planktonic cr...

Source: Wikipedia