在我省一些养鱼地区,养殖鱼类出血病时有发生。其主要症状表现为全身性出血(皮肤渗血),尤以头部、腹部、臀鳍为重。特别是当拉网引起鱼的挣扎时,充血现象更加明显,病鱼全身通红,抗应激能力下降,存活时间变短,普遍存在不耐运输现象。养殖鱼类出血病发生的原因主要是由鱼类毛细血 In some fish farming areas in our province, farmed fish bleeding occurs from time to time. The main symptoms of systemic bleeding (skin oozing), especially in the head, abdomen, anal fin is heavy. Especially when the pull-net causes the fish to struggle, the hyperemia phenomenon is more obvious. The diseased fish is flushed with redness, the resistance to stress is reduced, the survival time is shortened, and the phenomenon of impatient transport is common. Farmed fish hemorrhagic disease is mainly caused by the fish capillaries