公鱼(Hypomesus)是鲑形目胡瓜鱼鱼科的一种小型经济鱼类,属亚冷水性中上层鱼。在我国,仅分布于黑龙江、鸭绿江等少数水系。公鱼的渔业价值较高。它主食浮游动物,在一定条件下,也摄食底硒动物及昆虫等。食物链短,增产潜力大。公鱼性成熟早,一年就成熟产卵,生命周期短,繁殖力高,容易形成群体,在合理利用资源的前提下,可以一劳永逸地获取渔产品。公鱼早春和晚秋有集大群的生态习性,便于捕捞,能形成明显的渔汛期。另外,公鱼虽属亚冷水性鱼类,主要表现在低温繁殖上,平 The male fish (Hypomesus) is a small, economically fossilized salmon-headed Cucurbitaceae, a sub-chilled pelagic pelagic fish. In our country, it is only distributed in a few water systems such as Heilongjiang and Yalu River. Male fish have higher fisheries value. It is the staple food of zooplankton, under certain conditions, also feeding end selenium animals and insects. Short food chain, large potential for increasing production. Male sexual maturity as early as one year mature spawning, short life cycle, high fertility, easy to form groups, on the premise of rational use of resources, you can once and for all access to fish products. Male spring early spring and late autumn have a large group of ecological habits, easy to catch, can form a clear fishing season. In addition, the male fish, although sub-cooled aquatic fish, mainly in the low-temperature breeding, flat