网箱养鱼由于密度大,一旦发病,难以治疗。因此,在养殖过程中应以预防为主,防治结合。实践证明,最好的办法就是入箱前对鱼种进行消毒,杀死附着在鱼皮肤和鳃部的病原菌和寄生虫。 沈阳市辽中县一鱼场养了20多个网箱的鲤鱼。前几年,投放鱼种时,都对鱼种用药液消毒。1998年却疏忽了这一点,导致4月份所有网箱的鲤鱼都发生了疾病。轻者每天每只网箱死鱼10多尾,重者死鱼数十尾。死鱼和活鱼身上均有一块块棉絮状的附着物,经检 Cage fish because of the density, once the disease, difficult to treat. Therefore, in the breeding process should be based on prevention, prevention and treatment combined. Practice has proved that the best way is to disinfect fish species before entering the box, killing pathogens and parasites attached to the skin and gills of fish. Shenyang City, Liaoning Province, a fish farm raised more than 20 cage of carp. A few years ago, put the fish species, are used to disinfect fish species. This was neglected in 1998, causing all carps in the cage in April to develop disease. Light cage every day more than 10 fish dead fish, dead fish dozens of dead weight. Dead fish and live fish have a patch of cotton-like attachment, the seizure