生态和繁殖习性肉质鲜细肥嫩,富含蛋白质和脂肪,是一种高热量、易消化、营养价值很高的经济鱼类。它广泛分布于我国大陆的江河湖泊水域中,适应环境能力强,平时昼伏夜出,以小型动物为饵,食性杂。在淡水中生活约3—4年,性腺开始发育,在秋末冬初的夜间,成群结队地徐徐向海洋作生殖洄游。亲鳗的怀卵量,多达700—1,300万粒。在海洋中产卵后,相继死去。其受精卵为浮性,破膜孵出带有卵黄囊的仔鱼。每年从11月到翌年5月,在漂浮中逐渐接近大陆河 Ecology and breeding habits Fine and delicate meat, rich in protein and fat, is a high calorie, digestible, high nutritional value of economic fish. It is widely distributed in China’s rivers and lakes waters, to adapt to environmental ability, usually nocturnal, with small animals as bait, diet mixed. About 3-4 years live in freshwater, gonads begin to develop, in the late autumn and early winter night, in droves to the ocean for reproductive migration. The pro-eel’s fecundity, up to 700-1,300 million. After spawning in the ocean, one after another dies. The fertilized eggs are buoyant, rupture of membranes hatch larvae with yolk sac. Every year from November to May the following year, gradually floating in the mainland river