Black cod contains a lot of fat, black or gray-black skin, pure white meat and rich oil. The meat tastes white, fine and tender. Many countries regard black cod as the main food fish. It is rich in omega-3 fatty acids, containing iron, calcium, copper and other minerals. It is an excellent high-quality fibrinogen, and its liver is rich in vitamin A and vitamin D. In addition, black cod is rich in fish oil. Although the oil content is high, it is mostly polyunsaturated fat, which is an ideal low-cholesterol food for human beings.

Silver cod is rich in nutrition and can be eaten by five groups (pregnant women, infants, teenagers, white-collar workers and middle-aged and elderly people). Silver cod can help the rapid loss of DHA and EPA in pregnant women and prevent depression; Can strengthen young children's brain development; Can strengthen the brain, improve eyesight and enhance memory; It can relieve stress and improve mood. In addition, it contains Se, which makes it have certain anti-cancer ability.

Hairy hairtail has less fat thorns, delicious taste and rich nutrition. Every100g hairtail contains protein18.4g, fat 4.6g, phosphorus, iron, calcium, zinc, magnesium, vitamins A, B 1, B2 and other nutrients. Hairtail contains more unsaturated fatty acids, and the carbon chain of fatty acids is longer, which has the function of lowering cholesterol, nourishing liver, expelling wind and stopping bleeding, and has good effects on treating bleeding, sores, carbuncle and other diseases.

Cod meat is thick, with few spines, and the meat is sweet. Protein accounts for 16.8% in cod meat, which is higher than that of salmon, pomfret, shad and hairtail, while the fat content in cod meat, like sharks, is only 0.5%, which is 7 times lower than that of salmon/kloc-0 and 7 times lower than that of hairtail. The edible part of cod per100g contains 88kcal, white matter 20.4g, calcium 42mg, magnesium 84mg, nicotinic acid 2.7mg, vitamin A14mg, carotene10.2mg, potassium 32 1 mg and phosphorus 232mg. The proportion of these nutrients in cod liver oil is the best proportion of the amount needed by the human body every day.