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1、水霉病:终年可见,以2～5月为甚,水霉等菌丝深入肌肉蔓延扩展,体表向外生长似旧棉絮状的菌丝。 2、烂鳃病:3～10月发病,鳃丝腐烂、尖端骨外露,鳃上附有污泥并常有黄色粘液,严重者鳃盖骨被腐蚀成一个半透明的小洞。 3、中华鳋、锚头鳋病:5～10月发病,鳃丝末端挂着象“蝇蛆”一样的白色小虫。
1, water mildew disease: visible throughout the year, in February to May is even more, mycelium and other fungi spread in-depth muscle spread, body surface outward like old mycelial mycelium. 2, rotten gill disease: 3 to 10 months of onset, gill filaments rot, extremity bone exposed, gills attached to the sludge and often yellow mucus, in severe cases, the operculum was eroded into a translucent hole. 3, Chinese 鳋, the first moistening disease: 5 to 10 months of onset, the end of the gill wire hanging like a “maggots” white worms.