白皮病此病多系皮肤受伤由细菌感染所致。发病初期,鱼的背鳍基部或尾柄出现白点,继而扩展出现白色块状病症,最后鱼头朝下,尾鳍向上而死亡。白皮病多发生于夏秋季,特别以5—6月份的鲢、鳙鱼最常见,草鱼有时也有。预防方法主要是在拉网、运输等过程中,避免擦伤鱼体,另用药物进行鱼体消 White skin disease and more skin diseases caused by bacterial infections. Early onset, the fish’s dorsal fin base or caudal white spots appear, and then expand the appearance of white block disease, the last head down, caudal fin up and death. White skin disease occurs in summer and autumn, especially in 5 - 6 months of silver carp, catfish most common, grass carp sometimes. Prevention is mainly in the process of pulling the net, transportation, to avoid scratching the fish, and the other drugs for fish consumption