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Lightly speckled North Pacific fish (Oncorhynchus keta) of the salmon family. The chum salmon ranges from the Mackenzie and Lena rivers in the southern Arctic southward to Japan and the Rogue River. Its weight averages about 10–12 lbs (4.5–5.5 kg). During the autumn spawning season it swims more than 2,000 mi (3,200 km) up the Yukon River.
Variants of CHUM SALMON
chum salmon or dog salmon
This entry comes from Encyclopædia Britannica Concise. For the full entry on chum salmon, visit Britannica.com.