池沼公鱼属鲑形目胡瓜鱼科,生长于22℃以下水域,系小型水库亚冷水性经济鱼类,在我国自然分布中为东北特有,体长10cm左右,味美且多营养,一年成熟产卵,繁殖率高,可以在当地水库自成群体与繁衍。北京市水产生产和科研部门已在京郊移植成功,初步形成产 The marsh marsh belongs to the salmon-headed smelt family and grows in the waters below 22 ℃. It is a sub-chilled economic fish in a small reservoir. It is peculiar to the northeastern China in its natural distribution. Its body length is about 10cm. It is delicious and nutritious. Spawning, high reproductive rate, population and reproduction in local reservoirs. Aquaculture production and scientific research departments in Beijing have been successfully transplanted in the suburbs of Beijing, initially forming a production base