Crab (páng xiè): Kingdom Animalia, Phylum Arthropods, Subphylum Crustacea, Class Mollusca, Subclass Euphyla, Decapoda, Asterophora, Brachycephala. It is a crustacean (crustacean). Its body is protected by a hard shell and it breathes through gills. In terms of biological taxonomy, it is the same animal as shrimp, lobster, and hermit crab. Most types of crabs live in the sea or offshore areas, and some live in freshwater or land. They rely on female crabs to give birth to baby crabs, and each time the female crab lays a large number of eggs, the number can reach millions or more. Crabs rely on the geomagnetic field to determine direction. The genetic material of such organisms is complex and highly diverse, often as many as 100 pairs. Common crabs include hairy crabs (river crabs, hairy crabs, clear water crabs), swimming crabs, etc. my country is rich in crab resources, among which the hairy crabs produced in the lower reaches of the Yangtze River include Gucheng Lake hairy crabs, Taihu Lake hairy crabs, Gaoyou Lake hairy crabs, Yangcheng Lake hairy crabs, Xinghua hairy crabs, and Hongze Lake hairy crabs.

Look

The carapace of high-quality crabs is blue-gray and shiny, the abdomen is white, the golden claws are covered with yellow hairs, the color is bright, the umbilicus is rounded, protruding outward, and the limbs are connected Firm and curved, large and strong. If the back is yellow, the meat is thin. In addition, if the crab is vigorous and crawling around, it is a strong and good crab.

Weigh

For crabs that meet the requirements in appearance, you should weigh them one by one with your hands. Crabs that feel heavy to the touch are fat. This trick is not suitable for river crabs and live sea crabs, because these crabs are often tied up.

Peel

Peel off the umbilical cover of the crab. If the crab roe in the shell is abundant, neat, and condensed, the crab is a good crab.

Pull

If you buy a dead sea crab, you should observe that the legs of the crab are intact. If there is a weak elasticity in the crab legs when you gently pull them, it means it is a fresh sea crab. For fresh sea crabs, if you gently pull the crab legs, not only will there be no weak force, but the crab legs will break easily.

Smell

If you smell a fishy smell from sea crabs, it means that the sea crabs have become rotten and can no longer be eaten. Eating spoiled crabs can easily cause food poisoning.

Eat at the right time

Before and after the ninth month of the lunar calendar, the gonads of female crabs are mature and the meat is plump; after the tenth month of the lunar calendar, the gonads of male crabs are mature and the meat is plump. Therefore, they should be eaten at the right time.