Who can tell me the difference between home-cooked fish?

The fish that families usually eat are mainly marine fish and freshwater fish, and freshwater fish also transfer water to still water, that is, rivers, lakes and fish ponds. Because of the undercurrent in the lake caused by the earth's movement, huge lake waves can also be regarded as living water. Food can also be divided into herbivores and carnivores; There are also deep water, reclaimed water and diving fish; There are also hot (belt) water, warm (belt) water and cold (cold) water fish. From the appearance, it can be distinguished from the fish's head and teeth; Mainly divided into round head, flat head and pointed head. Distinguish from the size, shape and density of scales. It also depends on the shape and fins of the fish. Grass carp, carp, carp and pomfret are four classic freshwater fish, which are delicious (recommended), as well as mullet (snakehead), mandarin fish and pomfret. Common edible marine fish: hairtail (saury), cod, sardine, herring, pomfret, cuttlefish, shark fin, etc. (too many ~ hehe! )。 There is nothing to say about live fish when purchasing. They are all fresh fish, mainly depending on personal preferences and tastes. Frozen fish or dead fish mainly depends on whether the fish body is clean and bright (whether there are spots on the fish body), whether the fish gills are bright red (usually sick fish will accumulate blood or spots on the gills), and non-frozen fish can also see whether the fish belly is too soft and whether the fish anus is too swollen and congested. Of course, it is mainly the purchasing experience when purchasing on site.