River group of fish generally refers to long-nosed shad, also known as catfish. Different places, catfish have different names, Shanghai said "catfish mouse", Sichuan name "river group", Guizhou is called "Xi fish".

Extended information:

Long-kissed shads are distributed in the east of China's Liaohe River, Huaihe River, Yangtze River, the Minjiang River to the Pearl River and other waterways and the western part of North Korea, with the Yangtze River system mainly. It is also found in shallow waters north of 40°N, including France, eastern England, western Norway, Siberia in Russia, Alaska and Canada in the United States, and the Heilongjiang River system and the Irtysh River in Xinjiang, China.

Shishou catfish refers to the origin in Shishou, the name Shishou Yangtze catfish.

Reference:Baidu Encyclopedia: long-nosed shad