The Songhua River Tetrapod has few spines. Cherokee fish generally refers to the Cherokee salmon, also known as the folded dragon, water dragon, big sea dragon, etc., in biological classification belongs to the animal kingdom, chordata, chordata, salmonid, salmonid, Cherokee fish, the vast majority of the time inhabited in the low temperature (15 degrees Celsius), fast-flowing rivers, is now included in the list of national second-class protection of animals, private fishing, trafficking, consumption of wild cherokee fish is an illegal act.