去年,山东省沂水县跋山水库网箱养鱼出现严重的寄生虫病,病原体为中华鳋。其病势之凶猛,传染速度之快,流行范围之广属多年少见,给养殖单位和个人造成了一定的损失。一、主要病症病鱼外表观察,体色变黑,食欲减退或不摄食,常在水中跳跃不安,狂游打转,鱼的尾鳍上叶往往露出水面,故又称其为“翘尾巴病”。发病后期,病鱼离群独游,呼吸困难。掀开鳃盖观察,肉眼可见许多带卵囊的雌鳋用 Last year, there was a serious parasitic disease in the fish cage of Bashang Reservoir in Yishui County, Shandong Province. The pathogen was Chinensis. Its fierce disease, the speed of infection, the prevalence of a wide range of rare for many years to aquaculture units and individuals caused some losses. First, the main symptoms Disease fish appearance, body color black, loss of appetite or loss of food, often jumping in the water uneasy, go swimming, fish caudal leaves often reveal the surface, it is also known as “Alice tail disease.” Late onset, sick fish outing tour alone, breathing difficulties. Open the gill cover, visible to many naked women with oocysts