A large fish (salmon).
Numerous scales; one dorsal fin plus one adipose fin; no spines in fins; irregular black spots on back, both lobes of tail fin, dorsal fin, and adipose fin; gums black at base of teeth. In the ocean, chinook salmon are blue, green, or gray on the upper side, silvery-white on the flanks and belly. During the spawning season, chinook salmon are olive brown, red, or purplish, the color change being more pronounced in males than in females. Young have 6-12 large parr marks on each side. Total length to around 150 cm.