随着鱼类集约化养殖程度提高,放养密度不断增大,相应的鱼病发病率也明显上升。根据我们近年来对几千例鱼病镜检的诊治实践,现将池塘养鱼常见和多发性鱼病总结归纳如下:一、鱼类的体表病(一)鲤鱼洞穴病:1、症状:洞穴病一般夏秋季开始潜伏发病,鱼体表出现红色斑点状出血,春季越冬 With the intensification of fish intensive farming, stocking density continues to increase, the corresponding incidence of fish disease also increased significantly. According to our diagnosis and treatment practice of thousands of cases of fish disease in recent years, the common and multiple fish diseases of pond fish are summarized as follows: First, the surface diseases of fish (a) carp cave disease: 1, symptoms: Cave disease usually summer and fall began to latent disease, the fish body showed red spot-like bleeding, winter wintering