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南方大口鲶是我国特有的１个新的优良养殖品种。随着高密度养殖的发展，疾病的发生日益严重，现对南方大口鲶危害较大的寄生虫性鱼病的防治作一概述。１ 小瓜虫病１．１ 病因及流行情况 是由多子小瓜虫寄生引起的寄生虫性鱼病，对南方大口鲶危害最大。该病多发生在春秋季，即４
Southern catfish is a unique peculiar species of China. With the development of high-density culture, the disease is more and more serious, and the prevention and treatment of parasitic fish diseases which are more harmful to the southern catfish are now summarized. 1 small melons disease 1.1 causes and prevalence of parasitic fish diseases caused by parasitism more than a small melon, catfish most harmful to the South. The disease occurs in spring and autumn, that is, 4