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小瓜虫病（Ｉｃｈｔｈｙｏｐｈｔｈｉｒｉａｓｉｓ又叫白点病Ｗｈｉｔｅｓｐｏｔｅｄｉｓｅａｓｅ），是淡水养殖生产中极为常见的鱼病之一。小瓜虫属原生动物门纤毛虫纲膜口目凹口科，寄生在淡水鱼体上的是多子小瓜虫，成虫卵圆形或球形，大小为３５０～８００ｕｍ×３００～
Ichthyophthiriasis, also known as Whitespotedisease, is one of the most common fish diseases in freshwater aquaculture production. Small Culex is a protozoan door Ciliophora Gangmukoukou Division, parasitic in freshwater fish is more than a small melon, adult oval or spherical, the size of 350 ~ 800um × 300 ~