2005年鱼病高发季节,我区草鱼、鲫发生一些特殊症状：病鱼体表无明显异常,口腔及眼球等无明显症状,将鱼倒置,血液从口腔向下淌,鳃丝虽有充血或淤血却完整,解剖后,肝脏呈土黄色,胆囊偏大,肠外壁无明显异常,内壁严重充血,肠道无弹性易断成节。经专家组确诊为鱼类肝胆综合症。 In the season of high incidence of fish diseases in 2005, some special symptoms occurred in grass carp and crucian carp in our district. There was no obvious abnormality in diseased fish body, no obvious symptoms such as oral cavity and eyeball, inverted fish, and blood dripping down from oral cavity. Congestion is complete, the anatomy, the liver was khaki, the gallbladder was too large, no significant abnormal wall of the intestine, severe congestion of the inner wall, intestinal inelastic easily broken into sections. The group of experts diagnosed fish hepatobiliary syndrome.