20多年来,日本鳗鲡和欧洲鳗鲡一直是我国淡水养殖鳗鲡的主要品种。但由于日本鳗鲡苗种资源日趋贫乏,且价格高,养殖成本高;欧洲鳗鲡对养殖环境条件的要求严格,导致人工养殖的区域限制。美洲鳗鲡以其苗种最为低廉,对养殖水质要求不高而成为养殖的新优品种。美洲鳗鲡原产于美洲东岸,脊椎骨数目为103～111,体型较小,眼小而突出,成鳗体型短胖,吻短,体色呈灰色,能在水温15～28℃、盐度0～35的环境中正常 For more than 20 years, Japanese eel and European eel have been the main species of freshwater eels in China. However, as the Japanese eel seed resources become increasingly scarce, and the price is high, breeding costs are high; the European eel 养 strict environmental requirements of farming, resulting in regional restrictions on farmed. The American eel owns the lowest cost of its seedlings, the less demanding of the water quality of breeding and the new superior species of breeding. American eel 鲡 native to the eastern coast of the Americas, the number of vertebra 103 ~ 111, smaller, small and prominent eyes, eel body short fat, kiss short, body color is gray, the water temperature 15 ~ 28 ℃, salinity 0 ~ 35 environment is normal