Cod (PL: 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 one species that belongs to genus
Gadus is commonly not called cod (Alaska pollock, Gadus chalcogrammus ).
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 in 1758. (However, G.