鳃霉病又称黑鳃病,近几年来在河南省的郑州、洛阳、开封等地的集约化养鱼区广泛流行,发病率在80%以上,给渔民造成重大经济损失。主要症状发病初期吃食鱼逐渐减少,偶见病鱼在池边缓慢游动,受惊则沉入水底。后期可见病鱼增多,游动缓慢,厌食,严重时浮于水面,呼吸困难,肉眼可见鳃丝 Gill mold, also known as gill disease, has spread widely in intensive fish farming areas in Henan, including Zhengzhou, Luoyang and Kaifeng, with a prevalence of over 80%, causing major economic losses to fishermen. The main symptoms of eating fish gradually reduce the incidence early, occasionally sick fish swimming slowly in the pool, was shocked into the water. Increased disease can be seen late fish, swimming slowly, anorexia, severe floating in the water, breathing difficulties, visible gill filaments