Annotated list of fish helminth fauna in the Lyutoga river (southern Sakhalin)

Ichthyoparasitological studies of fish caught in the Lyutoga River (southern Sakhalin) have been carried out. 12 species of fish were discovered, six of them were examined for the first time: Carassius gibelio, Hypomesus nipponensis, Salvelinus curilus, Gasterosteus sp., Eleginus gracilis, Megalocottus taeniopterus. According to the results of original research and literature data, 42 species and undefined forms of helminths were noted, including monogenes 6, cestodes 9, trematodes 14, scrapers 3, nematodes 10.