Crayfish, as an invasive species, originated in America and spread to China at the end of last century. Because of its rapid growth and reproduction, strong adaptability, and eating everything, even the roots of crops, people think it is a very threatening pest to agriculture. At present, crayfish has become a kind of delicacy for China people. Shops of crayfish are everywhere, which is extremely hot, but it didn't take long for some shops to close down for some reasons.

Crayfish, as an invasive species, is constantly sought after by diners in China. As far back as a few years ago, many stores in China began to start this shop business of crayfish, and it has been increasing at a high speed. However, in the near future, for some unknown reasons, some shops dealing in crayfish have closed down, and then think of the fact that crayfish had been selected as an invasive species in Yunnan Province at that time, which was quite out of date because Chinese people did not want to eat crayfish, which led to the re-flooding of crayfish.

In fact, this is not the case. The closure of some crayfish stores is a natural law of normal survival of the fittest. It is often normal for several crayfish stores on a street to close in succession under the fierce market competition. It is very difficult for a store with poor reputation to survive in the competition. It took five years for the whole process of developing crayfish industry to usher in this smooth transition development situation, during which it is absolutely normal for some stores to be eliminated.

Crayfish is an invasive species in China, and many people think that it is absolutely wrong to solve this invasive species by eating it. At present, the crayfish eaten in China are all cultivated. They are large in number, good in variety and stable in supply. Compared with crayfish in the wild, they are safe and fleshy, and have been selling well on the table for a long time.