虹鳟是公认的名贵鱼类之一，属肉食性鱼类，其摄食凶猛，常群跃水面争掠食物，场面较为壮观，加上其体色异常美丽，因此许多水族馆把它列为观赏鱼类，但在养殖过程中，烂鳃病时有发生。现将本单位养殖虹鳟鱼烂鳃病的防治措施介绍如下。一、症状及病原分析病鱼常离群独自漂游在 Rainbow trout is recognized as one of the most valuable fish species, is a carnivorous fish, its ferocious feeding, often jumping over the surface of the water swept food, the scene is more spectacular, coupled with its unusually beautiful body color, so many aquarium it as ornamental fish , But in the breeding process, gill disease occurs from time to time. Now the unit breeding rainbow trout gill disease prevention and control measures are described below. First, the symptoms and pathogen analysis Fish often drift alone in isolation