Because fish can be made into various processed products, such as frozen fish fillets, it is very popular abroad. In European countries, the local people used to say fish actually refers to pure fish with the head, tail and bones removed, such as flounder, cod and salmon. But they are not used to eating fish heads. We in China are good at cooking fish heads into delicious side dishes. At present, the fishing season is closed. Most of the flounder fish on the market are imported, and only a few of them are cultured and processed.

The scientific name of croaker should be PARALICHTHYS olivaceus (because of homophonic, it is called croaker), and it is a kind of flounder together with Duobao fish.

Paralichthys olivaceus mainly grows in the deep-sea cold water area with low water temperature, so most of them are distributed in Alaska and Russia, and there are also a large number of aquaculture in Liaoning and Shandong in China, and only a small number are distributed in Zhejiang.