鲢鱼细菌性败血病是由细菌引起的流行病，症状表现为：病鱼的颔部、口腔、鳃盖、体侧和鳍条基部出现局部或全部的轻度或严重充血，部分鱼因眼眶充血而出现突眼。剖腹后，腹腔内有黄色或血红色腹水，肝、脾、肾脏肿胀，肠壁充血。本病近年来在池塘、水库经常发生，６～８月易发 Silver carp bacterial septicemia is caused by bacterial epidemics, the symptoms are as follows: diseased fish mouth, mouth, gill cover, body side and the bottom of the fin appear partial or complete mild or severe congestion, some fish Orbital congestion and exophthalmos. Caesarean section, intraperitoneal yellow or blood red ascites, liver, spleen, kidney swelling, intestinal congestion. In recent years, the disease in the ponds, reservoirs often occur, 6 to August prone