答者:河南农大牧医工程学院高春生问:家里的水塘养了一些草鱼、鲢鱼、鲤鱼,最近发现鱼身上有红肿、烂的现象,我用了一些杀虫的药,但是不起作用,不知为什么芽答:首先要查明原因,若是寄生虫引起的,根据不同的寄生虫要对症下药,不同寄生虫所用药不同,可以用杀虫药;但若是细菌引起? A: Gao Niansheng, Henan Nongmu University of Pasture Engineering Q: There are some grass carp, silver carp and carp in the pond at home. Recently, there was a phenomenon of swollen and rotten fish. I used some insecticidal drugs but could not afford Role, I do not know why bud A: First of all to find out the reasons, if the parasite caused, according to different parasites should be the right medicine, different parasite drugs used, you can use insecticide; but if the bacteria cause?