鱼类暴发性出血病亦称细菌出血性败血症。 1996年贺兰县发病面积达 45 3.3hm2 ,其中成鱼 434hm2 ,鱼种 2 0hm2 ,造成死鱼 15 .1万kg。其中成鱼 15万kg,鱼种 10 0 0kg ,造成直接经济损失达 165万元。此病来势猛 ,死亡率高 ,危害严重 ,曾给养殖生产造成极大的损失 Fish outbreak of hemorrhagic disease also known as bacterial hemorrhagic septicemia. In Helan County in 1996, the disease area reached 45.33hm2, of which 434hm2 were adult fish and 20hm2 were fish species, resulting in 15.1kg dead fish. Among them, 150,000 kg of adult fish and 10 000 kg of fish species resulted in a direct economic loss of 1.65 million yuan. The disease fierce, high mortality, serious harm, had caused great losses in breeding production