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Due to intensive human activities related to the use of water resources, has undergone substantial qualitative and quantitative changes of biocenosis and the fish community. This inevitably arise parasitic fish diseases that lead to a decrease in the number of valuable species and the deterioration of the epizootic situation reservoirs. Fauna of parasitic worms of Cypriniformes ponds diverse river of the Syrdarya shown 49 species. 18 species belongs to the class Trematoda, Cestoda classdoi:10.1051/e3sconf/202125804044 fatcat:ithxxaqnzbbbpb4boxbon7q4ie