大口鲶是淅川丹江库区网箱养鱼的主要品种之一。养殖规模近千万尾,由于苗种外购和规模、密度的增大、多种病原体大量繁殖传播,使大口鲶发病率和死亡率呈逐年上升趋势,造成巨大经济损失,现将常见病诊断与防治技术总结如下:1腐皮病主要病状:病鱼背鳍以后出现腐烂发白,尤以尾部溃 Catfish is one of the main varieties of cage fish in Xichuan Danjiang reservoir area. Breeding scale nearly 10 million, due to outsourcing of seed and size, density, multiplication and transmission of a variety of pathogens, the incidence and mortality of catfish showed a upward trend year after year, resulting in tremendous economic losses, diagnosis of common diseases are now And prevention and treatment of technology are summarized as follows: 1 fusifu disease main symptoms: diseased fish appear decay after dorsal white, especially tail ulceration