一、鳜鱼养殖病害及防治1.纤毛虫病(车轮虫、斜管虫、舌杯虫病)病因是由车轮虫、斜管虫、舌杯虫病寄生虫引起。具体症状表现为病鱼浮头靠近池岸,游动缓慢,口张开,体表呈灰白色,鳃丝呈灰白色粘液多,并发烂鳃病,病重时鱼体推动平衡,上下浮动,最后导致死亡。此病在鱼种阶段危害最? First, catfish breeding diseases and prevention and treatment of 1 ciliate disease (car worm, pipe worm, cholelithiasis) the cause is caused by the car rotifers, parasitoids, tongue cup worm parasite. Specific symptoms of diseased fish floating head close to the pool shore, swimming slowly, open mouth, body surface is gray, gill filaments mucus and more gills, gill disease, sick fish weight to promote the balance, up and down floating, and eventually lead to death . The disease at the stage of fish most harmful?