Not much.

Songhua carp is a type of grass carp in China. Songhua carp is a fish species introduced from Germany. It grows in the Yalu River and eats pine pollen since childhood. The pine pollen contains 268 kinds of active nutrients, so it got its name. Songhua fish. Songhua fish has no earthy smell, and has very few scales on its body, making it easy to clean. Moreover, this fish has very few bones. The meat is fragrant, tender and smooth, the skin is elastic and plump, the taste is excellent, and the roe is smooth and fragrant.