The crab can live for about a month without food, but only for a week if it is dehydrated. As an omnivore, there are many types of food it can accept, and it can be fed natural bait or artificial feed. Natural bait is mainly plankton, aquatic plants, benthic animals, etc., artificial feed is soybean cake, vegetable cake, rice bran, silkworm pupa, etc., the feed must be matched with the feeding, can not be fed for a long time a kind of food, so as to avoid it picky eating.