According to the classification rules of left flounder and right flounder, crow is a kind of flounder, and it is wrong to say that crow is an alias of flounder. The scientific name of salmon is Greenland sole.

Cod (local names: Datouqing, Datouyu, Datouyu, Mingtai fish, Shuikou fish, Guangkou fish, Datouxing fish, and stone oak fish). Pure cod refers to cod, which is divided into Atlantic cod (Gadus morhua), Greenland cod (Gadus ogac) and Pacific cod. [1] There are Pinnaceae in the coding order, and the common concept of cod is extended to Pinnaceae, with more than 50 species, most of which are distributed on the North Atlantic continental shelf. Important species are haddock, blue cod, green cod, marlin, Norwegian long-arm cod and cod. Cod is one of the largest fish caught in the world every year, which has important edible and economic value.