Class Actinopterygii Woodward, 1891 - ray-finned fishes Subclass Neopterygii Regan, 1923 Infraclass Teleostei Müller, 1845 Supercohort Teleocephala de Pinna, 1996 Cohort Osteoglossomorpha Greenwood et al., 1966 Order Osteoglossiformes Berg, 1940 - bonytongues Family Osteoglossidae Bonaparte, 1845 - bonytongues and arapaimas Genus Arapaima Müller, 1843