Lycopteridae is an extinct family of freshwater osteoglossomorph ray-finned fishes. Genera Lycoptera Müller, 1848 Aokiichthys Yabumoto 1994 Changichthys Su 1991 Yungkangichthys Chang and Chou 1974 Description These ray-finned fishes were small, often only a finger's length, with small, almost circular scales. Distribution They occurred in East Asian rivers and lakes from the Jurassic to Cretaceous. Fossils of these fishes have been found in China and Japan. References Arno Hermann Müller: Lehrbuch der Paläozoologie. Band III, Vertebraten, Teil 1. Gustav Fischer Verlag, 1985 Joseph S. Nelson: Fishes of the World. John Wiley & Sons, 2006, V.N. Yakovlev Systematics of the family Lycopteridae International Geology Review - Volume 8, Issue 1, 1966 External links The Paleobiology Database Helsinki.fi Prehistoric ray-finned fish families Jurassic bony fish Cretaceous bony fish Freshwater fish Jurassic first appearances Cretaceous extinctions Osteoglossomorpha