斑点叉尾属底栖鱼类 ,对生态环境适应性较强 ,是美国主要淡水养殖品种之一。它天然分布于美国中部、加拿大南部及大西洋沿岸等部分地区 ,主要栖息于流速较快、水质无污染的沙质或石砾底质的大中河流中。 1984年由湖北省水产科学研究所引进 ,现已在我国大部分地区推广养殖。榆 Channel catfish is a benthic fish species, adaptable to the ecological environment, is one of the major freshwater aquaculture species in the United States. It is naturally distributed in central America, southern Canada and the Atlantic coast and other parts of the main habitat in the fast flow, pollution-free sandy or gravel sediment in medium and large rivers. Introduced by Hubei Institute of Fisheries Science in 1984, it has been popularized in most areas of our country. elm