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一、鳃霉病。鱼鳃霉病的病原体属霉菌属,寄生于各种鱼类的鳃部,有的还可以穿入血管和软组织,病鱼初期由于鳃霉的苔丝体在鳃组织中生长,破坏鳃组织,使鳃瓣失去正常红色而呈粉红色或苍白色,随着病态的加剧,病鱼呼吸困难窒息而死。此病发病迅速,生长繁殖快,很快致使全塘鱼大面积爆发流行。本病发病原因与池塘水质有极大关系,水质不好,很容易发生此病,流行季节为5～10月,以5～7月为甚,各种鱼均易感染。防治
First, gills disease. Fish gill mold pathogens genus Mold is parasitic on the gills of various fish, and some can also penetrate the blood vessels and soft tissue disease early fish due to the growth of the gill Tissue growth in the gill, undermining the gill tissue, So that the loss of the normal red gill flap was pink or pale, with the morbid exacerbations, sick fish breathing difficulties suffocate and die. The rapid onset of the disease, rapid growth and reproduction, quickly led to a large area of the whole pond outbreak epidemic. The disease causes and pond water has a great relationship, poor water quality, it is prone to the disease, the epidemic season for 5 to 10 months to 5 to 7 months, all kinds of fish are susceptible. Prevention and treatment