鳃霉病（Ｂｒａｎｃｈｉｏｍｙｃｏｓｉｓ）又称黑鳃病，近两年来辽宁省的沈阳、辽阳、营口等集约化养鱼区的鲶鱼、彭泽鲫广泛流行，发病率在 ８０％以上。２００１年６月初仅辽阳沈旦镇就有３０个鲶鱼养殖户带鱼前来诊治，彭泽鲫鱼鳃霉病更为普遍，给渔业生产造成重大经济损失 Branchiomycosis (Branchiomycosis), also known as gill disease, the past two years Liaoning, Shenyang, Liaoyang, Yingkou and other intensive fish farming catfish, Pengze crucian carp widespread prevalence, the incidence of more than 80%. In early June 2001, only 30 catfish farmers in Liaoyang’s Shenyang Town came to the clinic for diagnosis and treatment. The gill mildew of Pengze carp was more common, causing major economic losses to fishery production