Heterophyes nocens is a species of trematodes, or fluke worms, in the family Heterophyidae.

Distribution This species occurs in: southwestern Korea in coastal regions Kōchi Prefecture, Chiba Prefecture, Yamaguchi Prefecture, Chūgoku region, Hiroshima Prefecture, and Shizuoka Prefecture in Japan China.Chai J. Y., Darwin Murrell K. & Lymbery A. J. (2005). "Fish-borne parasitic zoonoses: Status and issues". International Journal for Parasitology 35(11-12): 1233-1254. .

Life cycle The first intermediate hosts of Heterophyes nocens include brackish water snail Cerithideopsilla cingulata.

The second intermediate host include freshwater fish: Mugil cephalus, and Acanthogobius flavimanus.

Natural definitive hosts are fish-eating mammals: cats, dogs and rats.Jong-Yil Chai, Bong-Kwang Jung: Fishborne zoonotic heterophyid infections: An update. In: Food and Waterborne Parasitology. Volume 8–9, 2017, pp. 33–63. It can infect humans when eating raw fish.

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