Crabs belong to crustaceans, and most kinds of crabs are omnivores, so they can eat the following foods: aquatic plants such as small fish, shrimp, plankton, algae, duckweed, organic debris and so on. It can also be directly fed with artificial feed with balanced nutrition. Be careful not to give crabs rotten food, which will lead to a large number of crab deaths.
Different crabs have different habitats. Most kinds of crabs live in seawater or offshore areas, and some live in fresh water or land. Common crabs are Portunus trituberculatus, Portunus trituberculatus and Eriocheir sinensis. When raising crabs, it should be noted that the water quality must be good first. In order to ensure good air permeability, crabs can be provided with sand.
Introduction of crabs
Crabs: Animals, Arthropods, Crustacea, soft armor, Decapoda, Gastropoda, Anura. It is a crustacean. Its body is protected by a hard shell and breathes through its gills. Taxonomically, it is the same kind of animal as shrimp, lobster and hermit crab.
Most kinds of crabs live in the ocean or offshore areas, and some live in fresh water or land. They rely on the mother crab to give birth to small crabs, and every time the mother crab will lay a large number of eggs, the number can reach more than one million. Crabs rely on the geomagnetic field to judge their own direction. China has a long history of eating crabs, which is recorded in Yi Zhou Shu by Wang Huijie and Zhou Li Tian Guan's bumper harvest man.