Opisthorchis felineus

**Semantic type:** Animal

**Definition:** A species of trematode parasite in the family Opisthorchiidae characterized by a light brownish-to pink color, a cuticle lacking spines, and 2 prominent suckers, an oral sucker and a ventral one. The life cycle of O. felineus involves freshwater snails as the first intermediate host, freshwater fish as the second intermediate host, and fish-eating mammals as the definitive host. Humans may become infested by eating undercooked fish.

**Synonyms:** - Cat Liver Fluke - OPISTHORCHIS FELINEUS