0
Cod is a fish and codfish is a made up word. Do we say salmonfish, haddockfish?
It is not Its just another word for the fish cod but its codfish, so its practically a fish. But a different name for cod.
A group of codfish is called a school
Cod is a codfish. Scrod is strips or fillets of very young cod or haddock prepared for the restaurant trade.
Codfish eat herring and lobsterpolar cod feed on plankton and krill.