1, river crab: the scientific name of the Chinese mitten crab, belongs to the crustaceans, also belongs to the arthropods phylum - crustaceans - square crab family. River crabs reproduce in seawater, freshwater growth, love to dig burrows in the river to live, often hidden in the rivers, lakes and pools of the bank, or gravel, water plants;

2, stone crabs: also known as gomer crabs, creek crabs. Often inhabiting streams or streams under the rocks, a wide variety of species, China has found about 50 kinds. Common varieties of fine-toothed stream crab and serrated stream crab, smaller individuals, the back of the cephalothoracic armor slightly elevated, the back of the forehead has a pair of lumps, the front of the wrinkles or particles;

3, green crabs: scientific name is called the saw edge of the green crabs, inhabiting the mud and mud and near the shore in the shallow sea. The shell of the green crab is oval, flat and hairless, with a developed cephalothorax, strong chelae, and a hind foot shaped like an anchorage, so it is known as an anchorage;

4. Flower Crab: Also known as the distant sea pike, it is called the flower crab because of its patterned shell. Flower crab is rich in protein, trace elements, etc., the body has a good nourishing effect;

5, pike crab: pike-shaped head and chest armor was named, pike crab carapace in the center of the three protrusions, so it is also known as "three warts pike crab". Pike crab meat is fat and tasty, has a high nutritional value and economic value, and is suitable for seawater fertilization.