The Asian arowana (Scleropages formosus), known as the dragon fish, is one of the most prized and expensive aquarium fishes in the world. Scleropages is an extant freshwater fish of Osteoglossidae with a transoceanic distribution in Southeast Asia and Australia. All previously Known fossil records of Scleropages are scales, otoliths and isolated fragments of bones, and the distribution of osteoglossids remains a zoogeographical enigma.