鱼类的细菌性败血病是近年来淡水养殖出现的病害中最严重的疾病。由于此病的流行范围很广,发病鱼种类较多,特别是发病时多呈急性流行,发病后死亡率高,给养殖生产造成了严重危害。笔者通过几年的工作实践,介绍一些防治方法,供同行参考:1主要危害对象草、鲫、鲢、鲤及团头鲂2症状 Bacterial septicemia in fish is the most serious disease in freshwater aquaculture in recent years. Because of the wide range of epidemics of the disease, there are many types of fish disease, especially when the disease is mostly acute and the mortality rate after the onset is high, causing serious harm to aquaculture production. The author through a few years of work practice, introduce some methods of prevention and control for peer reference: 1 the main hazards grass, crucian carp, silver carp, carp and bream 2 symptoms