Heterophyes nocens

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.

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 animals: cats, and humans. It can infect humans when eating raw fish. Experimental definitive hosts are: dogs and cats.