食盐是防治多种鱼病的显效药物,对细菌、真菌、寄生虫均具有较强的杀灭作用。食盐防治鱼病办法是:一、浸洗法1、在鱼种放养前用3%～5%的食盐水浸洗5～20分钟,可防治白头嘴病、烂鳃病、车轮虫病、三代虫病、指环虫病、鳃隐鞭虫病、口丝虫病等。2、用4%的食盐水或用食盐和小苏打 Salt is an effective drug to prevent and cure many kinds of fish diseases and has a strong killing effect on bacteria, fungi and parasites. Salt prevention and treatment of fish diseases are: First, the dipping method 1, before stocking with 3% to 5% salt water immersion 5 to 20 minutes, can prevent whitehead mouth disease, rotten gill disease, carborneosis, three generations Worm disease, finger worm, gills whipworm disease, oral filariasis and so on. 2, with 4% saline or salt and baking soda