Metagonimus takahashii is a species of a trematode, or fluke worm, in the family Heterophyidae.
It is a human parasite causing metagonimiasis.
This species occurs in Japan and Korea.[1]
The first intermediate hosts of Metagonimus takahashii include freshwater snails Semisulcospira coreana[1] and Koreanomelania nodifila.[1] [2]
The second intermediate host include freshwater fish: crucian carp Carassius carassius, common carp Cyprinus carpio, and Tribolodon brandtii.[1]
Natural definitive hosts are humans.[1] Experimental definitive hosts are: mice, and dogs.[1] [3]