I went to the beach and caught a lot of crabs. The claws were purple and the shells were green. What are they called crabs? By the way, tell me how to raise this kind of crab. . . .

You can also feed them fish. Sea crabs can be fed with the offal of chickens and ducks, or small fish and shrimps. They can accept both raw fish and dried fish. You may also feed them fish feed, such as red worms, shrimps, snails, and clams. It is best to feed some grass-based food regularly, such as Vallisneria, Elodea, etc. As long as the feeding is OK, there is no need to worry about anything else. Crabs are easy to raise.