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How many species of salmon are there and how large can they get?

There are seven species of Pacific salmon. Five of them occur in North American waters: chinook, coho, chum, sockeye, and pink. Masu and amago salmon occur only in Asia. There is one species of Atlantic salmon.

Chinook/King salmon are the largest salmon and get up to 58 inches (1.5 meters) long and 126 pounds (57.2 kg). Pink salmon are the smallest at up to 30 inches (0.8 meters) long and 12 pounds (5.4 kg), although they average 3 to 5 pounds (1.3-2.3 kg).

Note: Steelhead trout are often listed as an eighth Pacific salmon, but unlike other Pacific salmon, they are capable of repeat spawning and do not die after spawning. It has been suggested that they be grouped with other fish as “Pacific Trout”.

Learn more: Western Fisheries Research Center - Questions and Answers about Salmon