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The Alaska pollock or walleye pollock (Gadus chalcogrammus) is a marine fish species of the cod genus Gadus and family Gadidae. It is a semi- pelagic schooling fish widely distributed in the North Pacific , with largest concentrations found in the eastern Bering Sea .
Although there is a fourth species of the cod genus Gadus, Alaska pollock, it is commonly not called cod and therefore currently not covered here. Cod are demersal fish found in huge schools confined to temperate waters in the northern hemisphere. Atlantic cod are found in the colder waters and deeper sea regions throughout the Northern Atlantic.
Cod (pl.: cod) is the common name for the demersal fish genus Gadus, belonging to the family Gadidae. [1] Cod is also used as part of the common name for a number of other fish species, and one species that belongs to genus Gadus is commonly not called cod (Alaska pollock, Gadus chalcogrammus).
Atlantic pollock is largely considered to be a whitefish, although it is a fairly strongly flavored one. Traditionally a popular source of food in some countries, such as Norway, in the United Kingdom it has previously been largely consumed as a cheaper and versatile alternative to cod and haddock.
White fish (Atlantic cod) White fish fillet (halibut – on top) contrasted with an oily fish fillet (salmon – at bottom)Whitefish or white fish is a fisheries term for several species of demersal fish with fins, particularly Atlantic cod (Gadus morhua), whiting (Merluccius bilinearis), haddock (Melanogrammus aeglefinus), hake (Urophycis), and pollock (Pollachius), among others.
Modern taxonomy included Alaska pollock (Gadus chalcogrammus), which is genetically not separate from Norway pollock. [15] [16] Greenland cod (G. ogac) that was considered an own species, is considered the same species as Pacific cod (G. macrocephalus). [16] [2] [3]
Pollock or pollack [1] (pronounced / ˈ p ɒ l ə k /) is the common name used for either of the two species of North Atlantic marine fish in the genus Pollachius. Pollachius pollachius is referred to as "pollock" in North America, Ireland and the United Kingdom, while Pollachius virens is usually known as saithe or coley in Great Britain and Ireland (derived from the older name coalfish). [2]
It contains several commercially important fishes, including the cod, haddock, whiting, and pollock. Most gadid species are found in temperate waters of the Northern Hemisphere, but several range into subtropical, subarctic, and Arctic oceans, and a single (southern blue whiting) is found in the Southern Hemisphere.