Cod called cod: "Cod" forms part of the common name of many other fish no longer classified in the genus "Gadus". Many are members of the family Gadidae; others are members of three related families within the order Gadiformes whose names include the word "cod": the morid cods, Moridae (100 or so species); the eel cods, Muraenolepididae (four species); and the Eucla cod, Euclichthyidae (one species). The tadpole cod family (Ranicipitidae) has now been placed in Gadidae. Gadiformes include: Some fish have common names derived from "cod", such as codling, codlet or tomcod. ("Codling" is also used as a name for
Cod Cod Cod is the common name for the demersal fish genus "Gadus", belonging to the family Gadidae. Cod is also used as part of the common name for a number of other fish species, and some species suggested to belong to genus "Gadus" are not called cod (the Alaska pollock). The two most common species of cod are the Atlantic cod ("Gadus morhua"), which lives in the colder waters and deeper sea regions throughout the North Atlantic, and the Pacific cod ("Gadus macrocephalus"), found in both eastern and western regions of the northern Pacific. "Gadus morhua" was named by Linnaeus