The body of the cod is slightly flattened laterally, and the tail is gradually narrowed backward. The body length is generally 20-30cm, and the larger ones can reach 50-70cm.

Cod has a slightly flattened body, and the tail is gradually narrowed backward. The length of the body is generally 20-30cm, and the larger ones can reach 50-70cm. the head is large, the muzzle is long and blunt. The head is large, the muzzle is long and bluntly pointed, and the eyes are large and lateralized. The mouth is large, anteriorly positioned, with the maxilla protruding and the posterior extension of the maxilla reaching below the anterior edge of the pupil; the mandible is slightly shorter, with a tentacle below the anterior end of the mandible. Both jaws and plastron with clusters of teeth, teeth conical, extrastriate teeth larger. Gill aperture broad, gill cover membrane connected with buccal.

The lateral line of the cod is high anteriorly and curves gradually downward into a lateral median position. Lateral line scales 150. 3 dorsal fins with fin rays 13-15, 16-20, 15-21, 2nd dorsal fin base longer than other two dorsal fin bases. 2 anal fins with fin rays 17-22, 16-20. opposite 2nd and 3rd dorsal fins respectively. Pectoral fins short. Ventral fin throaty. Caudal fin posterior margin slightly concave. Body dorsal gray-brown with many irregular brown and yellow markings, all fins gray, ventral gray-white.

Growing environment

Cod mostly live in the bottom of the ocean and the lower and middle layers of the deep sea, distributed in the world's oceans. For example, living in the Pacific Ocean, the Atlantic Ocean northern water temperature 0 ℃ to 16 ℃ cold waters. As long as the things that move, it will eat, because eat more, so grow fast, generally more than 10 years can grow to 1 meter long, reproduction is also very strong, are generally living collectively, so it is very easy to catch, since ancient times is quite famous edible fish.