Superphylum Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
   Phylum Chordata Bateson, 1885 - chordates
     Subphylum Craniata auct. see Subphylum Vertebrata Cuvier, 1812
       Vertebrata (Lamarck, 1801) - vertebrates see Subphylum Vertebrata Cuvier, 1812
         Myopterygii - myopterygians
           Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
             Grade Teleostomi Bonaparte, 1836
               Euteleostomi - bony vertebrates
                 Class Actinopterygii Woodward, 1891 - ray-finned fishes
                   Subclass Neopterygii Regan, 1923
                     Division Teleostei Müller, 1845 see Infraclass Teleostei Müller, 1845
                       Elopocephala see Supercohort Teleocephala de Pinna, 1996
                         Clupeocephala
                           Subdivision Ostarioclupeomorpha Arratia, 1997 see Cohort Otomorpha E.O. Wiley & G.D. Johnson, 2010
                             Superorder Ostariophysi Jordan & Evermann, 1896 see Subcohort Ostariophysi Sagemehl, 1885
                               Series Otophysi Rosen & Greenwood, 1970 see Section Otophysa (Rosen & Greenwood, 1970)
                                 Cypriniphysi
                                   Characiphysi Fink & Fink, 1981 see Superorder Characiphysae (Fink & Fink, 1981)
                                     Siluriphysi Fink & Fink, 1996
                                       Order Gymnotiformes Rafinesque, 1810 - American knifefishes
                                         Suborder Sternopygoidei
                                           Superfamily Apteronotoidea
                                             Family Apteronotidae - ghost knifefishes
                                               01 Genus Adontosternarchus Ellis, 1913
                                               02 Genus Apteronotus Lacépède, 1800 [polyphyletic]
                                               03 Genus Compsaraia Albert, 2001 [monotypic]
                                               04 Genus Magosternarchus Lundberg, Cox Fernandes & Albert, 1996
                                               05 Genus Megadontognathus Mago-Leccia, 1994
                                               06 Genus Orthosternarchus Ellis, 1913 [monotypic]
                                               07 Genus Parapteronotus Albert, 2001 [monotypic]
                                               08 Genus Platyurosternarchus Mago-Leccia, 1994 [monotypic]
                                               09 Genus Porotergus Ellis, 1912
                                               10 Genus Sternarchella Eigenmann, 1905
                                               11 Genus Sternarchogiton Eigenmann, 1905 [monotypic]
                                               12 Genus Sternarchorhamphus Eigenmann, 1905 [monotypic]
                                               13 Genus Sternarchorhynchus Castelnau, 1855