Marine fish with regularly ossified skeleton. The main difference with the Atlantic cod (Gadus morhua) is in its larger head, which exceeds one third of the total length of the specimen. It has 3 dorsal and 2 anal fins, and a long chin barbel. Brown or gray dorsally, becoming paler ventrally; dark spots or vermiculating patterns on the sides. It can measure up to 1.19 m and weigh up to 23 kg.