Alaska Codfish Gadus macrocephalus Tilesius This cod is very abundant in Bering Sea, on both shores, and ranges southward on our coast as far as Oregon on the offshore banks. It is usually found in 15 to 130 fathoms, and is an important food-fish, though not held in as high esteem as the common cod of the Atlantic. Externally, few if any important differences are observable between the two, but the air-bladder or "sound" of the Pacific species is markedly smaller. Colour, brownish, lighter below; back and sides with numerous brownish spots; first anal and ventral fins dusky, other fins pale.