斑点叉尾,又称“八须鲶”(北京)、“大白鲨”(台湾)、沟鲶、钳鱼等,属于鲶形目、科鱼类,淡水可钓鱼种之一。体形长,头尖,前部宽肥,后部细长。有触须4对。腹平直,体深灰色,体表无鳞,黏液丰富。背鳍和胸鳍皆有硬刺。尾柄前端有一脂鳍,尾鳍分叉。斑点叉尾原产于北美洲,是一种大型淡水鱼类。20世纪60年代引入我国台湾,1985年内地才从美国引进原 Channel catfish tail, also known as “catfish” (Beijing), “white shark” (Taiwan), ditch catfish, pike fish, belonging to the order Siluriformes, families of fish, freshwater one of fishing species. Body length, tip, wide front fat, slender rear. 4 pairs of tentacles. Abdomen straight, dark gray body, surface scales, mucus-rich. Dorsal and pectoral fins have a hard thorns. Tail handle front has a fat fin, caudal fin forks. Channel catfish, native to North America, is a large freshwater fish. In the 1960s, it was introduced into Taiwan in China. Only in 1985 did the mainland introduce it from the United States