Cercopagididae
Cercopagididae is a family of crustaceans belonging to the order Diplostraca. A lot of Cercopagididae species are non-native species, many of which pose a great threat to aquatic ecosystems.
Genera:Bythotrephes Leydig, 1860 Cercopagis Sars, 1897
In addition, * Apagis Sars, 1897 is sometimes treated as a genus rather than as a subgenus, Cercopagis.