Crayfish, as an invasive alien species, has successfully conquered the stomachs of most Chinese people.

It has become a delicacy as famous as beer, peanuts, and cucumbers in the night food stalls.

Others, such as hairy crabs, carp, salmon, bullfrogs and the like from other countries, are overrun by various animals. We just look at this and smile.

Foreigners are not fools. They don't eat not because they don't know how to eat, but because they know that those animals are polluted and cannot be eaten. They have no natural enemies and have become overrun.

If you don’t believe it, look where are the places where carp are overpopulated in the United States?

Where was that place in history? The same goes for hairy crabs in Germany.

As for the salmon one, that one has become a fishing meme.