Pollock (alternatively spelled pollack; pronounced /ˈpɒlək/) is the common name used for either of the two species of North Atlantic marine fish in the genus Pollachius ("P."). 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, and lythe; while P. virens is sometimes known as Boston blues (distinct from bluefish), coalfish (or coley), silver bills or saithe.