It is a kind of shrimp native to Northeast China, and its scientific name is Northeast Black Crayfish. I like to live among rocks in a clear stream, hide under rocks during the day and climb out for food after dusk. Omnivorous, growth temperature 12-28℃. 10, swim to deep water for wintering, and live and fatten in shallow water after opening the river the next year. Feeding on small fish, tadpoles and aquatic insects in the river. I also eat overwintering forest frogs in winter. It is mainly distributed in the Heilongjiang River Basin in China, the Ergon River Wetland Reserve in Russia, the China-Russia-Mongolia Three Kingdoms Reserve, and also in the northern part of Korea.

The resources of northeast mole cricket still depend on the natural environment for self-reproduction. Due to overfishing and other factors, the resources of northeast mole cricket declined sharply in the 1990s. Due to the destruction of habitat environment and the pollution of natural living waters in Northeast China, its breeding conditions are harsh and its population recovery ability is poor. Under the superposition of multiple influencing factors, its natural population is becoming scarce and its distribution area is shrinking year by year.