Caiyu is the common black fish, which is distributed in rivers, streams, lakes, ditches and ponds in China. The efficacy and function of Caiyu is mainly to replenish nutrients and improve the body metabolism, which usually needs to be consumed properly and can bring certain benefits.

The nutritional value of the fish is high, rich in protein, 100g of fish contains 19.8g of protein, calcium content is more than other fish, 100g of fish contains 57mg of calcium, but also contains a variety of vitamins and inorganic salts. The protein of Caiwu meat has a fluffy structure, which is easy to be digested and absorbed by the human body, and moderate consumption can replenish some of the nutrients needed by the human body. In addition, the fish contains a variety of essential amino acids, such as aspartic acid, glutamic acid, alanine, but also contains very easy to be absorbed by the human body protein, is the human body's physiological activities required for the material, can provide energy for the body.

It should be noted that, because of the cold nature of Zaifu, pregnant women and people with cold spleen and stomach should avoid eating a lot of it, so as to avoid the occurrence of abdominal pain, diarrhea and other symptoms of gastrointestinal discomforts.