Opecoelidae
Opecoelidae is a family of trematodes. It is the largest digenean family with over 90 genera and nearly 900 species, almost solely found in marine and freshwater teleost fishes. It was considered by Bray et al. to belong in the superfamily Opecoeloidea Ozaki, 1925 or the Brachycladioidea Odhner, 1905. Genera Family Opecoelidae Subfamily Bathycreadiinae Martin, Huston, Cutmore & Cribb, 2018 Genus Bathycreadium Kabata, 1961 Subfamily Hamacreadiinae Martin, Downie & Cribb, 2019 Genus Allopodocotyle Pritchard, 1966 Genus Bentholebouria Andres, Pulis & Overstreet, 2014 Genus Cainocreadium Nicoll, 1909 Genus Choanotrema Nitta & Tanaka, 2018 Genus Hamacreadium Linton, 1910 Genus Pacificreadium Durio & Manter, 1968 Genus Paraplagioporus Yamaguti, 1939 Genus Pedunculacetabulum Yamaguti, 1934 Genus Podocotyloides Yamaguti, 1934 Subfamily Helicometrinae Bray, Cribb, Littlewood & Waeschenbach, 2016 Genus Helicometra Odhner, 1902 Genus Helicometrina Linton, 1910 Genus Neohelicometra Siddiqi & Cable, 1960 Subfamily Opecoelinae Ozaki, 1925 Genus Anisoporus Ozaki, 1928 Genus Anomalotrema Zhukov, 1957 Genus Apertile Overstreet, 1969 Genus Coitocaecum Nicoll, 1915 Genus Dactylomyza Aken'Ova, 2003 Genus Dactylostomum Woolcock, 1935 Genus Dimerosaccus Shimazu, 1980 Genus Discoverytrema Gibson, 1976 Genus Genitocotyle Park, 1937 Genus Labracetabulum Reimer, 1987 Genus Manteriella Yamaguti, 1958 Genus Margolisia Bray, 1987 Genus Neodactylostomum Toman, 1996 Genus Notoporus Yamaguti, 1938 Genus Opecoeloides Odhner, 1928