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: -