青鱼（Mylopharyngodonpiceus）是我国淡水养殖四大家鱼之一，它生长快、产量高、肉味鲜美，是深受人们欢迎的养殖对象。传统饲养青鱼的饲料主要以贝类（螺蛳、黄蚬等）资源为主。目前，由于江河湖泊等水域遭受污染，天然贝类资源逐年下降，影响到我国的青鱼养殖生产。因而，需 Mylopharyngodon piceus is one of the four major freshwater fish farms in China. It grows fast, produces high yield and has delicious meat. It is welcomed by farmer. The traditional feed herring feed mainly shellfish (snail, yellow croaker, etc.) resources. At present, due to the pollution of rivers and lakes and other waters, natural shellfish resources have been declining year by year, affecting the production of herring farming in China. Therefore, need