淡水鳗原产南美亚马逊河流域，属大型热带经济鱼类，其生活临界水温下限为12℃，因此，我国大部分地区都不能自然越冬，各地都需因地制宜，采用不同的方式越冬。主要越冬方式有室内和室外两种，室外越冬又有利用温泉和工业余热水越冬两种方式。1987年以来，我场一直利用合肥发 Freshwater eel originating in South America and the Amazon basin, is a large tropical economy fish, the life critical water temperature lower limit of 12 ℃, therefore, most of China’s winter can not be natural, all local needs, according to local conditions, the use of different ways of winter. There are two main indoor and outdoor winter wintering methods, winter outdoor hot spring and industrial use of hot water in two ways. Since 1987, my field has been using Hefei hair