ALASKA

The Chinook salmon, Oncorhynchus tshawytscha, (derived from Russian ??????), is a species of anadromous fish in the salmon family. It is a Pacific Ocean salmon and is variously known as the king salmon, tyee salmon, Columbia River salmon, black salmon, chub salmon, hook bill salmon, winter salmon, Spring Salmon, Quinnat Salmon and blackmouth. Chinook Salmon are typically divided into "races" with "spring chinook", "summer chinook", and "fall chinook" being most common. Races are determined by the timing of adult entry into fresh water. A "winter chinook" run is recognized in the Sacramento River.
The chinook salmon is blue-green on the back and top of the head with silvery sides and white ventral surfaces. It has black spots on its tail and the upper half of its body; its mouth is dark gray. Adult fish range in size from 33 to 36 inches (840 to 910 mm), but may be up to 58 inches (1.47 meters) in length; they average 10 to 50 pounds (4.54 to 22.7 kg), but may reach 130 pounds (59 kg). The current sport caught World Record is 97 pounds 4 ounces (44.1 kg) and was caught in May 1985 by Les Anderson in the Kenai River (Kenai, Alaska). The commercial catch world record is 126 pounds (57 kg) caught near Petersburg, Alaska in a fish trap in 1949
Chinook salmon may spend between one to five years in the ocean before returning to their home rivers to spawn, though the average is three to four years. Chinook prefer larger and deeper water to spawn in than other species of salmon and can be found on the spawning redds (nests) from September through to December. After laying eggs in a redd, adult female chinook will guard the redd from 4 to 25 days before dying, while males look for additional mates. Chinook salmon eggs will hatch, depending upon water temperatures, 90 to 150 days after deposition. Eggs are deposited at a time to ensure that young salmon fry emerge during appropriate time for juvenile survival and growth. Fry and parr (young fish) usually stay in freshwater from twelve to eighteen months before travelling downstream to estuaries, where they remain as smolts for several months. The typical lifespan of an Alaskan chinook salmon is 4–5 years, although some chinooks return to the fresh water one or two years earlier than their counterparts, and are referred to as "Jack" salmon. "Jack" salmon can be half the size of an adult chinook salmon, and are usually thrown back by sportsmen but kept by commercial fishermen
Chinook salmon range from San Francisco Bay in California to north of the Bering Strait in Alaska, and the arctic waters of Canada and Russia (the Chukchi Sea ), including the entire Pacific coast in between. Populations occur in Asia as far south as the islands of Japan. In Russia, they are found in Kamchatka and the Kuril Islands.

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