Is crucian carp freshwater fish or sea fish?

Crucian carp is one of the most common freshwater fishes in China, living in major river systems outside the Qinghai-Tibet Plateau. So is crucian carp freshwater fish or sea fish?

Is crucian carp a freshwater fish or a sea fish

Crucian carp is a freshwater fish. Crucian carp (Carassius auratus) is an omnivorous fish with wide diet, strong adaptability, strong fecundity, strong disease resistance, fast growth, low requirement for water temperature and easy to breed.

Second, the edible value of crucian carp

Crucian carp is a kind of fish with high protein, low fat and high nutritional value. it is a high-quality, cheap and sufficient source of protein in the national dietary structure.

The amino acid composition of protein is similar to that of human protein, and it belongs to high quality protein. Because of its short muscle fiber and high water content, crucian carp is softer and more digestible than livestock and poultry meat. Fat is mainly composed of unsaturated fatty acids, mainly omega-3 polyunsaturated fatty acids, of which eicosapentaenoic acid (EPA) has the effects of reducing blood lipid, preventing atherosclerosis and anticancer. It is an important source of vitamin A, vitamin D and vitamin B2, and the contents of vitamin E, vitamin B1 and niacin are also very high.

The dietotherapy effect of crucian carp has been summarized since ancient times, which has the effects of invigorating qi and invigorating the spleen, diuresis and detumescence, dredging the lower breast and so on, especially the live crucian carp soup has an incomparable effect on other drugs, and those who are physically weak often eat it for good health.

Third, how to choose crucian carp

The first is the size of the fish. Generally speaking, the fish is most suitable for cooking when it grows to eight minutes old. Because the fish in this period is just in the "puberty" stage, the sex has matured, its meat is more full, and the taste is also very delicious. And too small fish because they have not yet grown up, the meat is not fresh and tender enough, and the thorns will appear more; when the fish grow too big, the meat will be rougher, and the harmful substances accumulated in the body will increase. When buying, it is recommended that carp and Wuchang fish choose about one and a half jin, crucian carp choose half to one jin, and grass carp choose four or five kilograms. The second is the spawning period of the fish, when nearing the spawning period, the fish is more rich in fat and other nutrients, and the meat tastes more delicious. After the spawning period, the nutrients such as fat and protein in the fish are greatly reduced, the fish will become thin and the meat will become loose.

Crucian carp is also an important ornamental fish, beautiful and colorful goldfish is evolved from crucian carp. Crucian carp has a long history of breeding in China.