Chinook salmon

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Related to Chinook salmon: chum salmon

Chinook salmon

a Pacific salmon, Oncorhynchus tschawytscha, valued as a food fish

Chinook Salmon


(Oncorhynchus tshawytscha), also king salmon or black salmon, a fish of the genus Oncorhynchus, comprising the Pacific salmon. The Chinook salmon differs from other salmon in the large number of gill rays, which number 15 to 19. The back is covered by tiny, roundish black spots, as are the dorsal and caudal fins. The Chinook salmon is the largest of all the Pacific salmon. The body length of the representatives caught off Kamchatka averages 90 cm, and the weight 8–10 kg; some have been known to weigh more than 50 kg. The Chinook salmon is distributed in the northern part of the Pacific Ocean, inhabiting areas along the coast of North America, from Alaska to California, and areas along the coast of Asia, from the Anadyr’ River to Amur Bay.

The Chinook salmon attains sexual maturity at three to seven years of age. It spawns in July and August on the Kamchatka Peninsula; in the rivers of North America it also spawns in the autumn and winter. The fish enter the rivers in the spring, swimming far upstream. Fecundity is 4,200 to 20,000 eggs, which are large, nearly the size of the eggs of the chum salmon (O. keta). The fry live in rivers from the age of three or four months to one to two years of age.

A very valuable commercial fish, the Chinook salmon is bred and acclimatized.


Nikol’skii, G. V. Chastnaia ikhtiologiia, 3rd ed. Moscow, 1971.
Zhizn’ zhivotnykh, vol. 4, part 1. Moscow, 1971.
Smirnov, A. I. Biologiia, razmnozhenie i razvitie tikhookeanskikh lososei. Moscow, 1975.


chinook salmon

[shə¦nu̇ ′sa·mən]
(vertebrate zoology)
Oncorhynchus tshawytscha. The Pacific's largest salmon, possibly exceeding 46 kilograms (100 pounds) at maturity, often spawns in tributaries located a considerable distance from the ocean. Also known as king salmon.
References in periodicals archive ?
In particular, I'm concerned about our most-prized and sought after fish: wild spring chinook salmon.
Historically, the Columbia River and its tributaries in Washington, Idaho, and Oregon produced more chinook salmon (Oncorhynchus tshawytcha) than any other river system in the world (5).
FIFTEEN evolutionarily distinct stocks of chinook salmon spawn in waters from southern California to Washington and east into Idaho.
Poised on the south fork of the Salmon River, the 3,200 acre fire-stricken stand was in crucial habitat for the endangered chinook salmon (a key and fastdisappearing component of the Columbia River Basin ecosystem).
Part II explains how the Reach has become vital to the survival of Columbia River fall chinook salmon and why, with the change in mission at the Hanford Reservation, protection of this valuable species will be critical.
However, the source of New Zealand's chinook salmon has not been reviewed since the fish were established in New Zealand in the early 1900's, and their explicit source remains a matter for speculation.
Alder Planked Fresh Copper River Chinook Salmon Fresh Copper River Chinook roasted on an alder plank and served with melting leeks and spring chive oil, accompanied by golden potato gratin.
Wild spring chinook salmon in the upper Willamette River received federal protection as a threatened species in 1999.
Chinook Salmon (Oncorhynchus tshawytscha) are found in rivers from central California around the North Pacific Rim and the Bering Sea to Russia and are the target of valuable commercial and recreational fisheries.
Sacramento River winter Chinook salmon (Oncorhynchus tshawytscha) (SRWC), named for the season of freshwater spawning return, were first listed under the ESA in 1989 as threatened and then as endangered in 1994 (Federal Register, 1994).