河鳗又称白鳝,它的肉质鲜细肥嫩、富含蛋白质和脂肪,是一种高热最、易消化、营养价值高的经济鱼类。它广泛分布于我国大陆的江河湖沼之中,适应环境能力强,平时昼伏夜出,属杂食性,以动物饵料为主,甚至同类大小相残。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,並在入海 River eel, also known as eel, its meat is fat and delicate, rich in protein and fat, is a kind of high fever, digestible, high nutritional value of economic fish. It is widely distributed in China’s rivers and lakes, adapt to environmental ability, usually nocturnal, is omnivorous, with animal bait-based, or even the size of the same phase. In freshwater life about 3 to 4 years, the gonads began to develop in the late autumn and early winter night, in droves swarmly to the ocean for reproductive migration, and into the sea