Australian freshwater lobster, native to the tropical regions of northern Australia and North Queensland, Oceania, the rivers of southern New Guinea streams, similar to the appearance of the sea lobster, body color for bright blue, lime green or ferruginous blue, depending on the concentration of minerals in different waters and the difference in color, the two pairs of male adult shrimp chelipeds on the outside of the front end of the a bright red membranous plaque, so it is also known as the red cheliped crayfish. Larger and more adaptable than the equally famous crayfish (American crayfish, crayfish).

The crayfish, also commonly known as crayfish. Native to Mexico, then spread to North America, around 1930, the crayfish was introduced to China. The crayfish is an exotic species and is a great threat to local fish, crustaceans, and aquatic plants. However, because of the huge amount of food consumed in China, this has played a role in stopping the spread of crayfish.