Other names: Dog Salmon, Keta Salmon, Calico Salmon
Chum salmon in ocean coloration are metallic greenish-blue on the dorsal surface with fine black speckles making them difficult to distinguish from sockeye salmon. Chum salmon have fewer (19-26), shorter and heavier gill rakers on the first arch, relatively large eyes, a very narrow caudal peduncle (base of the tail), and deeply forked caudal fin. Chum salmon range in weight from 7-18 pounds and measure between 24-32 inches long. Male chum salmon spawning coloration includes an overall olive with vertical bars of darker green and purple, which provides the visual cue indicative of the common name, calico salmon. Spawning females generally sport a dark horizontal band along the lateral line and less intense green and purple vertical bars. The males develop the typical hooked snout of Pacific salmon and very large teeth which at least partly accounts for their other name of dog salmon.