Winter and autumn are good opportunities for the infirm to make supplements, and fish is a good aquatic product for tonic, which is not only delicious, but also has high nutritional value. Its protein content is twice that of pork, and it belongs to high-quality protein with high absorption rate. Fish is rich in thiamine, riboflavin, nicotinic acid, vitamin D and a certain amount of minerals such as calcium, phosphorus and iron. Although the fat content in fish is low, the fatty acids in it have been proved to have the effects of lowering blood sugar, protecting the heart and preventing cancer. Vitamin D, calcium and phosphorus in fish can effectively prevent osteoporosis. Chinese medicine believes that eating fish should pay attention to symptoms, and eating "fish" according to symptoms can show its edible and medicinal value.

Crucian carp: sweet and warm. Has diuretic, repercussive, invigorating qi, invigorating spleen, dredging meridians, promoting lactation, and clearing away heat and toxic materials.

Hairtail: It can tonify the five internal organs, dispel wind and kill insects, especially suitable for people with spleen and stomach weakness, indigestion and dry skin. Can be used for adjuvant treatment of persistent hepatitis and chronic hepatitis. Eating hairtail regularly can also moisturize the skin and keep it moist and elastic.

Black herring: It has the functions of benefiting qi and nourishing stomach, eliminating dampness and promoting diuresis, dispelling wind and removing annoyance. Eating it can treat qi deficiency and fatigue, stomach cold and pain, beriberi, dampness, malaria, headache and other symptoms. Herring contains trace elements such as zinc, selenium and iron, and it also has anti-cancer and anticancer effects.

Carp: sweet and warm. It is beneficial to detumescence, invigorating qi, strengthening spleen, dredging pulse and promoting lactation.

Grass carp: sweet and warm. Has effect in calming live, expelling pathogenic wind and relieving arthralgia. The ancients thought that grass carp was thick and loose, and steaming its head was better to treat headache caused by fatigue and wind deficiency.

Misgurnus anguillicaudatus: sweet in taste and flat in nature. Has the effects of warming middle warmer, invigorating qi, clearing away urine, removing toxic substances and astringing hemorrhoid. Misgurnus anguillicaudatus has tender meat and high nutritional value, and its slippery saliva has antibacterial effect.

It should be noted that people with certain diseases are not easy to eat more fish. These diseases are gout, liver cirrhosis, tuberculosis and so on.