Red cod are normally found at depths of 100–300 metres and eat crabs, shrimps and small fish. They normally reach about 40–70cm in length and are an important commercial species. (You may have had some at your local fish and chip shop!) Their catch is managed by fishing quotas but there is some concern that the fishing method (trawling) used to catch red cod is putting endangered species, such as the Hector’s dolphin, at risk.