Cai Yu, also known as snakehead, has the effects of invigorating spleen, promoting diuresis, removing blood stasis, promoting tissue regeneration, clearing away heat and expelling wind, nourishing liver and tonifying kidney. Black fish is cold and sweet, belonging to the spleen and stomach meridian; Treating five hemorrhoids, treating dampness and facial edema, can "replenish the heart and nourish yin, clear kidney water, drain water and seep dampness, detoxify and clear heat; Has the effects of invigorating spleen, promoting diuresis, removing blood stasis, promoting tissue regeneration, and clearing away heat, and can be used for treating edema, damp arthralgia, beriberi, hemorrhoid, and scabies.

Cooking snakehead with ginger and red dates has an auxiliary effect on the treatment of tuberculosis. Braised snakehead with brown sugar can cure nephritis. Pregnant women eat steamed snakehead, which can promote lactation and enrich blood.

It should be noted that some people are allergic to snakehead, and the symptoms are usually diarrhea, vomiting, rash, backache and other symptoms. Generally, there is no discomfort when you just eat it, and it often appears after eating for 5 to 6 hours. Therefore, children, the elderly and other people with poor resistance should pay attention.

Extended data:

Snakehead is rich in nutrition and protein. The muscle of snakehead contains crude protein 17.63% (higher than the four freshwater fish in China), and the content of amino acids in muscle accounts for 77.07%, of which 7 essential amino acids account for 29.73%, and 4 umami amino acids (aspartic acid, glutamic acid, alanine and glycine) account for 3 1.07.

The crude protein content of snakehead muscle is 17.63% (male) and 18.89% (female), and it contains 18 kinds of amino acids, among which 8 essential amino acids are high in taste. Using the amino acid evaluation model, it was found that the essential amino acid composition of different parts of snakehead was relatively complete, with 53 points in male muscle and 55 points in female muscle.

The content of protein in snakehead muscle (16.94%) is higher than that in mandarin fish, grass carp, silver carp, bighead carp, soft-shelled turtle, hairtail, prawn and fish eggs.

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