1病原为疖疮型点状气单胞杆菌。2流行情况该病主要发生在青鱼、草鱼、鲤、鲫等鱼中,无明显流行季节,一年四季都有。一般水质污浊、养殖密度过大、水质较肥、鱼体受伤等条件下易发生此病。该病虽属慢性病,死亡率低,但可造成病鱼生长缓慢或停止,鱼产品品质极差,使养殖经济效益降低。 1 pathogen is apergillus type Pseudomonas aeruginosa. 2 prevalence of the disease occurs mainly in herring, grass carp, carp, crucian carp and other fish, no significant epidemic season, all year round. General water pollution, breeding density is too large, water more fat, fish injury and other conditions prone to the disease. Although the disease is a chronic disease, the mortality rate is low, but it can cause slow growth of diseased fish or stop the poor quality of fish products, reducing the economic benefits of aquaculture.