鳃是鱼类的重要呼吸器官,鱼体与外环境的气体交换主要由鳃来完成。鳃发生病变鱼类呼吸不畅,必然影响鱼类的正常代谢和生长。当鱼的鳃患病影响了鱼类正常呼吸,鱼体肢通过自身调节提高呼吸运动节律来弥补病鳃气体交换不足,当鳃的气体交换量降低到不能维持最低生命活动的需要时,鱼 Gill is an important respiratory organ of fish, fish and the environment outside the gas exchange is mainly done by the gills. Gill lesions diseased fish breathing poor, will inevitably affect the normal metabolism and growth of fish. When the gills of fish affect the normal respiration of fish, fish body limbs through its own regulation to improve respiratory movement rhythm to make up for gill gas exchange deficiencies, when the gill gas exchange volume is reduced to not be able to maintain the minimum life activities, fish