Perch is one of the important economic fish in China, which can be divided into sea bass and fresh water bass. Perch not only has high nutritional value, but also has tender meat, which is deeply loved by people. In the process of selecting perch, it is found that the abdomen of perch is round and flat, which needs special attention here. Generally speaking, bass with flat abdomen will be chosen, because this kind of bass has low fish oil content, light fishy smell and good taste. At the same time, fish oil contains a lot of cholesterol, which will do harm to health. Some people may say that I can just wash the oil when I wash it, but the market price of perch is not cheap. After the oil pollution is cleaned up, the weight of fish will be reduced and money will be wasted.

First, the choice of perch. Perch grows faster in the natural state and can reach adulthood in about one year. The weight of freshwater bass can reach one and a half to two pounds, and the weight of sea bass can reach two to three pounds. Perch is the most plump. Perch continues to grow, and its meat quality will gradually change. Perch must choose a balanced and round body. Perch with a long belly is fed with hormone feed. Try not to buy it. When choosing perch, live fish is the first choice. If the perch dies, you need to judge whether the perch is fresh before buying it. Here we mainly judge gills, fish eyes and fish scales. The gills are bright red, the epidermis and scales do not fall off, the fish eyes are clear and transparent, and the fish body is elastic without peculiar smell. When you choose perch, you should look at the surface for injuries. The injured bass will be infected by bacteria, and the quality of the fish will drop to a higher level, especially the red-tailed bass.

Second, the difference between sea bass and freshwater bass. The amino acids and other nutrients of sea bass are higher than those of fresh water bass, but the taste of sea bass is poor. So you must learn to distinguish. Sea bass has a sharp mouth, black spots on the skin and large scales. However, the freshwater bass is relatively small in size and scale. In the process of feeding, if the feed has high fat content and high feeding density, the phenomenon of round belly will appear. Steamed fish of freshwater bass is garlic cloves.