900,000 tons. According to Baidu.com big data information that every year China to consume nearly 900,000 tons of crayfish, hundreds of millions of rabbits, pigs and beef are not even counted, you have to rely on imports to meet domestic demand. Crayfish, also known as crayfish, red crayfish and freshwater crayfish. Shrimp-like and hard shell. Adult body length of about 5.6 ~ 11.9 cm, dark red, crustacean part of the nearly black, the back of the abdomen has a wedge-shaped stripe.