一、勤观察,早治疗一般鱼被病原体感染或侵袭后,都有一个过程,有一些征兆,病鱼活动迟钝,常缓慢游于水的表面,不聚群,若有惊动,略下沉后,即浮出水面,也有一些鱼刚发病时,狂游急窜或体色灰暗,鳞片脱落等。当发现鱼池中出现鱼病征兆时,应及时采取措施,进行治疗,可避免病情扩展。二、正确诊断,对症下药首先根据气候特征、水源情况,鱼种来源、混养比例和密度、饲养管理、历年鱼病流行规律、鱼群摄食、行动、体色等情况,进行实地调查分析,然后将濒于死亡的病鱼或死亡而未腐变的鱼尸,对其体表、鳃丝、肌肉、内脏 First, the ground observation, early treatment General fish infected by pathogens or invasion, there is a process, there are some signs of diseased fish slow, often slowly swim on the surface of the water, do not cluster, if alerted, slightly subsidence , That surfaced, there are also some fish just onset, mad rush rush channeling or body color dark, scale loss and so on. When the fish pond found signs of fish disease, prompt measures should be taken to carry out treatment to prevent the disease from expanding. Second, the correct diagnosis, the right medicine First of all, according to climate characteristics, water conditions, sources of fish species, polyculture and density, feeding and management, fish epidemic over the years, fish feeding, action, body color, etc., field survey and analysis, and then Will be on the verge of death of the sick fish or dead without decay of the fish, its body surface, gill filaments, muscle, internal organs