牙鲆具有生长快，食性杂，适应性广，活动量少等优点，其味道鲜美，肉质细腻，被确定为北方工厂化养殖的经济鱼类。自１９９２年以来，牙鲆的养殖在我国迅速兴起，苗种一直供不应求，养殖方式为陆地上池塘养殖和海面网箱养殖。一、生物学特征牙鲆Ｐａｒａｌｉｃｈｔｈｙｓｏ Paralichthys olivaceus has the advantages of rapid growth, complex diet, wide adaptability and low activity. It has delicious taste and delicate meat and has been identified as an economic fish for factory farming in the north. Since 1992, the cultivation of Japanese flounder has rapidly emerged in our country. The seedlings have been in short supply. The breeding methods are pond farming on the land and sea cage culture. First, the biological characteristics of flounder Pao Paralichthyso