1, regional differences; Qingjiang fish are mainly produced in the Qingjiang reservoir area of Hubei Province, and Jiangtuan fish are distributed in the Liaohe River, Huaihe River, Yangtze River, Minjiang River to Pearl River and western Korea in eastern China, mainly in the Yangtze River system.

2. Differences in characteristics; Qingjiang fish has a slender body, a flat head, a bulge in front of the starting point of dorsal fin and a vertical line on its side. The grouper is short and thick, with a big head and a small tail.