The difference between Yangtze bream and bream mainly lies in the growth environment, body shape and color.

1. Growth environment: Yangtze bream lives in the main stream of the Yangtze River and affiliated lakes, while bream lives in affiliated lakes in the middle and lower reaches of the Yangtze River.

2. Body shape: The body shape of the Yangtze River bream is more slender than that of the bream, while the body shape of the bream is more rounded and the body is wider.

3. Color: The color of Yangtze River bream is silvery white, while the color of bream is more black.

In general, although Yangtze bream and bream have similar names, their growth environment, body shape and color are still different.