Pollock (or pollack, pronounced the same and listed first in most UK and US dictionaries) is the common name used for either of the two species of marine fish in the Pollachius genus. Both P. pollachius and P.

virens are commonly referred to as pollock. Other names for P. pollachius include the Atlantic pollock, European pollock, lieu jaune, lythe, and pollock; while P.

virens is sometimes known as Boston blues (distinct from bluefish), coalfish (or coley) or saithe. Both species can grow to 3 ft 6 in (1.07 m) and can weigh up to 46 lb (21 kg). The fish has a strongly-defined silvery lateral line running down the sides.

Above the lateral line the color is a greenish black. The belly is white. It can be found in water up to 100 fathoms (180 m) deep over rocks, and anywhere in the water column.

They have a range from North Carolina up to the Gulf of St. Lawrence. Pollock are a "white fish".

They are an important part of the New England and North Atlantic fisheries, though less so than cod and haddock. They spawn in late winter and early spring on Georges Bank, off the New England coast. There are also members of the Theragra genus that are commonly referred to as pollock.

This includes the Alaska pollock or walleye pollock (Theragra chalcogramma) and the rarer Norwegian pollock (Theragra finnmarchica). While related (they are also members of the family Gadidae) to the above pollock species, they are not members of the Pollachius genus. Alaska pollock generally spawn in late winter and early spring on Southeast Bering Sea.

The Alaskan pollock fishery in the Bering Sea fishery is the largest single-species food fish fishery in the world.

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