虹鳟(Salmo gairdnerii)属冷水性鱼类,生长水温0-25℃,它肉质细腻食用价值高,属优质高档水产品。近年来,虹鳟养殖业发展很快,鱼病问题也日渐突出。我们结合养殖生产实践,把虹鳟鱼养殖中常见疾病及防治方法做以总结。1 虹鳟鱼发病的原因 虹鳟鱼发病是由病原体、水环境和虹鳟鱼三者共同作用而引起的。当水体中病原体的存在数量增多,入侵和感染机会就增多;水质恶化,水温突变,溶氧急 Rainbow trout (Salmo gairdnerii) is a cold water fish, the growth of water temperature 0-25 ℃, it has high meat quality and high value, is a high-end high-quality aquatic products. In recent years, rainbow trout aquaculture developed rapidly, fish disease problems have become increasingly prominent. We combine farming practices, the rainbow trout breeding common diseases and prevention methods to do summary. 1 The causes of rainbow trout Rainbow trout incidence is caused by the pathogen, water environment and rainbow trout together. As the number of pathogens in the water increases, the chances of invasion and infection increase; water quality deteriorates, water temperature changes, and dissolved oxygen urgently