Class Actinopterygii Woodward, 1891 - ray-finned fishes Count: [*†*] 55o;274f;61g;6s; †4o;4f;7g;2s Subclass Neopterygii Regan, 1923 Count: [*] 55o;274f;61g;6s; †4o;4f;7g;2s Infraclass Teleostei Müller, 1845 Count: [*] 55o;274f;61g;6s; †1o;4f;5g;2s Supercohort Teleocephala de Pinna, 1996 Count: [*] 55o;274f;61g;6s; †1f;2g Cohort Osteoglossomorpha Greenwood et al., 1966 Count: [*†*] 2o;4f;4g; †1f;2g Order Osteoglossiformes Berg, 1940 - bonytongues Count: [*†*] 3f;3g; †1f;1g Family Osteoglossidae Bonaparte, 1845 - bonytongues and arapaimas Count: [*] 2g 1 Genus Heterotis Rüppell, 1828 Count: - 2 Genus Arapaima Müller, 1843 Count: -