Heterophyes nocens is a species of trematodes, or fluke worms, in the family Heterophyidae.
This species occurs in:
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. It can infect humans when eating raw fish.