车轮虫病是鱼类很普遍的原病虫,广泛寄生于各种淡水鱼类的体表、鳃、鼻孔、膀胱和输尿管。主要危害鱼苗、鱼种,以4～7月份较为流行,危害下塘10天左右的鱼苗时,鱼苗成群沿塘边狂游,口腔充塞粘液,嘴闭合困难,不摄食,呈“跑马病”现象,鱼体消瘦。鱼苗体上在车轮虫较密集的地方,如鳍、头部、体表出现一层白翳,在水中观察尤为明显。此病多发生在池小、水浅、水质不良、食料不足,放养过密,连续下雨的情况下。到底怎样防治呢? 1、用8ppm硫酸铜浸洗20～30分钟进行鱼体消毒,或3～5％盐水浸洗2～10分 Viperidosis is a common pest of fish. It is widely parasitic on the surface, gills, nostrils, bladder and ureters of various freshwater fish. The main hazards fry, fish species to 4 to July is more prevalent, endanger the next 10 days under the pond fry, fry groups swim along the pond, oral mucus, mouth closure difficulties, not food, was “running sick” Phenomenon, fish body weight loss. The fry body in the ricketts where more dense, such as the fin, head, body surface layer of white flesh, especially in water observation. The disease occurred in small pool, shallow water, poor water quality, lack of food, stocking too close, continuous rain. In the end how to prevent it? 1, 8ppm copper sulfate for 20 to 30 minutes for disinfection of fish, or 3 to 5% brine immersion 2 to 10 minutes