Crayfish can't be eaten only by the tail. In addition to the shrimp tail, the meat of shrimp tongs can be eaten, but the head including shrimp yellow can't be eaten, because the circulatory system, respiratory system and reproductive system of shrimp are concentrated in the head and chest. There are not only many unformed eggs in the shrimp head, but also many crayfish's own garbage toxins. The head of crayfish is very easy to absorb heavy metals and toxins, which may cause physical discomfort after eating.

Crawfish can eat more than just the tail meat. In addition to the shrimp tail, the meat of shrimp tongs can be eaten, but the head including shrimp yellow can't be eaten, because the circulatory system, respiratory system and reproductive system of shrimp are concentrated in the head and chest. There are not only many unformed eggs in the shrimp head, but also many crayfish's own garbage toxins. The head of crayfish is very easy to absorb heavy metals and toxins, which may cause physical discomfort after eating.