纤毛类原虫病是池养鱼类最常见的寄生虫病。此病病原主要有车轮虫、斜管虫、杯体虫等。这类寄生性原虫的流行地区广，遍及全国各地，流行盛期为每年３～１１月。鱼类感染此病时因破坏鳃瓣等表皮组织，腐蚀鳃尖，刺激鳃丝，使鱼类呼吸困难，痛苦异常，特别在清晨池水缺氧情况下? Ciliate protozoosis is the most common parasitic disease in fish ponds. Pathogen of the disease mainly car worm, pipe beetles, beetles and other cups. The parasitic protozoa is endemic to all parts of the country and prevails from March to November every year. Fish infected with the disease due to the destruction of gill flap and other epidermal tissue, corroding gill sharp, stimulate the gill filaments, so that fish breathing difficulties, painful exception, especially in the morning pool of water hypoxia?