the salmon is part of family of fish called salmonidae,which includes trout and char. The fish has soft fin rays, a short dorsal fin, a fatty (adipose) fin, and teeth in its jaws. A young salmon has a splotchy colors on its sides for the first three years of its life, and then its scales turn to silver when it leaves tor the ocean. Upon returning to its native river to reproduce. the salmon turns black. The head of a female salmon is streamlined throughout its lifetime. A male, on the other hand, develops a hook, called a skype.in its jaw before reproducing