The Chinook Salmon is blue—green or purple on the back and top of the head, with silvery sides. It has black speckles on its tail and the upper half of its body, and weighs between 40 and 120 lbs when fully grown. Adults migrate from a marine environment into the freshwater streams and rivers of their birth in order to mate. They feed on terrestrial and aquatic insects and other crustaceans while young, and primarily on other fishes when older.
Fun Fact Unlike Steelhead Rainbow Trout, which spawn many times, Chinook Salmon spawn only once and then die.