河南省的淡水养殖业较为发达 ,淡水鱼养殖在农村经济中占有很大的比重。由于集约化养殖 ,高密度精养养殖 ,病害流行造成的危害日益严重。尤其是暴发性鱼病所造成的损失 ,已成为制约水产业发展的关键因素 ,严重挫伤了广大养鱼者的积极性。笔者综合几年来对鱼病诊治的情况 ,利用 Freshwater aquaculture is more developed in Henan Province, and freshwater fish farming accounts for a large proportion of the rural economy. Due to intensified aquaculture, high-density intensive farming, the epidemic caused by the increasingly serious harm. In particular, the loss caused by the outbreak of fish diseases has become a key factor restricting the development of the aquaculture industry, seriously dampening the enthusiasm of the majority of fish farmers. The author of the case of fish disease diagnosis and treatment over the past few years, the use of