Abstract: A total of 1 131 wild freshwater fishes were collected from Nver River, Gou River and Liao River in the west region of Liaoning Province, and examined for metacercariae by direct compression and artificial digestion （pepsin-HCl） method. All the 6 species fishes were infected by Clonorchis sinensis. The highest prevalence （82.8%, 216/261） were found in Pseudorasbora parva and the lowest （1.5%, 2/137） in Phoxinus lagowskii. The highest intensity of infection （2 390 per fish） was in Perccottus glehnidybowski and the lowest （30 per fish） in Phoxinus lagowskii.

Key words: Freshwater fish, Clonorchis sinensis, Metacercariae, Infection rate, Intensity of infection