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Why is now a rare blue crayfish in Jiangsu?

June 9, Jiangsu Province, Haian County, Dagong Town, Lingdong Village, villagers Wang Xiaoli home caught a blue crayfish, attracting the surrounding residents have come to watch the shooting.

Blue crayfish and normal red crayfish contrast. Crayfish body blue, even the whiskers are blue. Because of its unique color, it looks especially cute when put together with normal local crayfish.

Blue crayfish vs. normal red crayfish. The crayfish is blue in color, and even its whiskers are blue. Because of its unique color, it looks especially cute when put together with normal local crayfish.

Crayfish (scientific name: Procambarus clarkii): also known as crayfish, red crayfish and freshwater crayfish. Shrimp-like and hard shell. Adults are about 5.6-11.9 centimeters long, dark red, with a nearly black carapace and a wedge-shaped stripe on the back of the abdomen. Juvenile shrimp body is uniform gray, sometimes with black ripples. Chelicerae are narrow and long. The middle part of the carapace is not separated by a mesh-like space, and the carapace is distinctly granular. The frontal sword has lateral spines or the end of the frontal sword is scored. Because of its omnivorous nature, fast growth rate and strong adaptability, it has formed an absolute competitive advantage in the local ecological environment. Its feeding range includes water plants, algae, aquatic insects, animal carcasses, etc., and kill each other when food is scarce.