Coho Salmon (Oncorhynchus kisutch)

The body of the coho salmon is elongate and somewhat compressed. The head is conical. This species is dark metallic blue or blue green above, becoming silvery on the sides and belly. There are spots on the back. The main distinguishing feature between the coho and chinook salmon is the color of the gums at the base of the teeth. Chinook salmon have a blackish lining while coho has a white lining. Cohos also have black spots only on the upper part of the tail fin, whereas chinook tail fins are completely covered with black spots.