Perc cottus glenii (dybowski, 1877) is a kind of fish belonging to the genus Percus, commonly known as fat head, old head fish, sand perch, and yang GUI fish. Distributed in North Korea, Heilongjiang, Liaohe, Tumen River and other places. Generally live in lakes where aquatic plants grow. The pattern of this species originated from Wusuli River. The body is round, nearly spindle-shaped and the back is flat. I like living in still water of small tributaries of rivers, especially in bubbles covered with water.