Superphylum Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
   Phylum Chordata Bateson, 1885 - chordates
     Subphylum Craniata auct.
       Vertebrata Lamarck, 1801 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
         Myopterygii Janvier, 1978 - myopterygians
           Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
             Grade Teleostomi Bonaparte, 1836 see Clade Pan-Osteichthyes Rowe 2004 [Moore & Near 2020]
               Euteleostomi - bony vertebrates see Clade Osteichthyes Huxley 1880 [Moore & Near 2020]
                 Class Actinopterygii Woodward, 1891 - ray-finned fishes see Clade Actinopterygii Woodward 1891 [Moore & Near 2020]
                   Subclass Neopterygii Regan, 1923
                     Division Teleostei Müller, 1845
                       Elopocephala Arratia, 1999 see Supercohort Teleocephala de Pinna, 1996
                         Clupeocephala Patterson & Rosen, 1977 see Cohort Clupeocephala Patterson & Rosen, 1977
                           Subdivision Ostarioclupeomorpha Arratia, 1997 see Cohort Otocephala Johnson & Patterson, 1996
                             Superorder Ostariophysi Sagemehl, 1885
                               Series Otophysi Rosen & Greenwood, 1970 see Section Otophysa Rosen & Greenwood, 1970
                                 Cypriniphysi Fink & Fink, 1981
                                   Characiphysi Fink & Fink, 1981 see Subseries Characiphysi Fink & Fink, 1981
                                     Order Characiformes Goodrich, 1909 - characins
                                       Suborder Characoidei
                                         Superfamily Crenuchoidea Günther, 1864 [monotypic]
                                           Family Crenuchidae Günther, 1864 - crenuchids
                                             Subfamily Characidiinae Fowler, 1932 - South American darters
                                               Genus Klausewitzia Géry, 1965 [monotypic]