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Clonorchis sinensis under a light microscope.
Scientific classification e
Kingdom: Animalia
Phylum: Platyhelminthes
Class: Trematoda
Order: Opisthorchiida
Family: Opisthorchiidae
Looss, 1899

Opisthorchiidae is a family of digenean parasitic flatworms. Opisthorchiidae have cosmopolitan distribution.[1]

The most medically important species in the family Opisthorchiidae are Clonorchis sinensis, Opisthorchis viverrini and Opisthorchis felineus,[1] that are causing disease clonorchiasis.[1]

Some species are parasites of economically important fish, e.g. Clarias gariepinus.[2]


There are 13 subfamilies in the family Opisthorchiidae,[1] but their number is inconsistent:[1]


The family Opisthorchiidae consists of 33 valid genera:[1]


  1. ^ a b c d e f King, S.; Scholz, T. Š. (2001). "Trematodes of the family Opisthorchiidae: A minireview". The Korean Journal of Parasitology. 39 (3): 209–221. doi:10.3347/kjp.2001.39.3.209. PMC 2721069Freely accessible. PMID 11590910. 
  2. ^ Jansen van Rensburg, C., van As, J.G. & King, P.H. 2013. New records of digenean parasites of Clarias gariepinus (Pisces: Clariidae) from the Okavango Delta, Botswana, with description of Thaparotrema botswanensis sp. n. (Plathelminthes: Trematoda). African Invertebrates 54 (2): 431–446.[1]