鲢、鳙、草、青四种家鱼从五十年代中期自长江以南引入,已成为我区经济鱼类的重要组成部分。区内习惯而又亲切地称它们为“南鱼”。由于长期历史上形成的遗传特性,南鱼在我区的静水里不能产卵化苗。经过水产战线广大科技人员和职工的努力,南鱼北孵在我区已获得成功。但是.这一技术目前在生产上有些地区尚未过关,区内孵化的鱼苗供不应求,每年还要从 Silver carp, pomfret, grass, green four kinds of fish from the mid-1950s south of the Yangtze River has been introduced, has become an important part of the economic fish in our region. The habit of the district and affectionately call them “South fish.” Due to the genetic characteristics formed in the long history, Southern fish can not spawn seedlings in the still water of our district. After the aquatic front of the vast number of scientific and technological personnel and workers efforts, South fish north hatch in our area has been successful. However, this technology is currently not available in some areas of production, and the hatchery in the area is in short supply. Every year,