一、病因：由于欧鳗的表皮非常薄，拉网或分鳗很容易造成表皮损伤，如果不注意水体和体表消毒，被细菌感染后，容易引起急性败血症。二、病原：多种细菌。三、症状：欧鳗活动能力减弱，食欲下降，严重时完全停止摄食。解剖、镜检发现，鳃丝苍白，基本无血，血中有大量细菌团。 First, the etiology: As the European eel is very thin epidermis, pull the net or sub-eel is likely to cause epidermal damage, if you do not pay attention to water and surface disinfection, bacterial infection, easily lead to acute septicemia. Second, the pathogen: a variety of bacteria. Third, the symptoms: European eel activity decreased, decreased appetite, severe complete stop feeding. Anatomy, microscopic examination found that gill filaments pale, basically no blood, there are a large number of bacteria in the blood.