Crayfish belongs to aquatic food, and crayfish contains more protein. After stored overnight, it is easy to breed a large number of bacteria and produce harmful substances, so crayfish stored overnight can no longer be eaten.

Crayfish is rich in nutrition. Shrimp contains 20% protein, which is one of the foods with high content in protein. Compared with fish, shrimp contains less essential amino acid valine, but it is a balanced source of protein. In addition, crayfish contain glycine. The higher the content of this amino acid, the higher the sweetness of shrimp.