This is a common fish in Bohai Sea, Yellow Sea and East China Sea. However, near the estuary, the pollution of industrial toxic sewage, pesticides and fertilizers makes it difficult for fish to enter rivers and lakes. Moreover, overfishing makes it very rare, so it is listed as a national second-class protected wild animal. As for perch, ancient poets can say that they are full of praise for it. Fan Zhongyan said: "People come and go on the river, but they love the beauty of perch." At the same time, Ouyang Xiu said: "The water shield bass is delicious, and it is pleasant from afar."
Su Shi said in "Post-Red Cliff Fu": "The mouth is huge and thin, and it looks like Songjiang perch." This fish has a flat front, a big mouth, a slightly longer upper jaw, a wide pectoral fin, a continuous dorsal fin, four spines on the front gill cover, a brown back and a white abdomen. During the breeding season, carp skin has two orange-red oblique bands, just like two gill leaves.
The squid we usually eat is also of high nutritional value. Carp is rich in protein, vitamin A, vitamin B, calcium, magnesium, zinc, selenium and other nutrients, which can nourish liver and kidney, help spleen and stomach, eliminate phlegm and relieve cough, and is beneficial to people with liver and kidney defects.
In addition, the blood of squid contains more copper, which enables it to maintain the normal function of nervous system and participate in the functions of main enzymes of various substances. For those who lack copper, eating more perch can be a supplement. To sum up, the perch living in ancestors' poems is different from the perch we usually eat. The ancients ate Songjiang perch.