The blackfish ranges from Nova Scotia to South Carolina. It lives along the coast in rocky areas and may be found near pilings, jetties and wrecks. It is commonly caught at fishing reefs in the Atlantic Ocean just south of Long Island. Blackfish can grow to 3 feet or about 22 pounds. Blackfish feed mostly on mussels, clams, and crabs. The greenish coloration in the fins is caused by this fish's diet.