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为了有效地防治各种鱼病,必须首先知道鱼是否生了病,然后查明发病原因,对症下药,这样才能收到良好的治疗效果。1 对鱼病的正确诊断1.1 鱼生病后的表现 病鱼离群独游,浮于水面,反应迟钝,常常活动在池水的下风头处。病鱼的体色不正常,如发黑、发白或充血发红等,食欲减退。1.2 一般检查 捞取3～5尾刚死或有病未死的鱼,用肉眼检查鱼的体表、鳃部和肠道等部位有无病灶或寄生虫,如果病症不明显,可用显微镜检查。从
In order to effectively prevent various fish diseases, we must first know whether the fish is sick, and then identify the cause of the disease, the right medicine, so as to receive a good therapeutic effect. A correct diagnosis of fish disease 1.1 The performance of fish after illness Sick fish outlier solitary floating on the water, unresponsive, and often activities in the pool under the limelight. Disease fish body color is not normal, such as black, pale or redness, loss of appetite. 1.2 General inspection 3 to 5 fish were killed or sick not dead fish, with the naked eye to check the surface of the fish, gills and intestinal and other parts of the lesion or parasite, if the disease is not obvious, microscopic examination. From