Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Craniata Linnaeus, 1758 see Subphylum Craniata auct.
     Pisces
       Class Actinopterygii Woodward, 1891 - ray-finned fishes see Clade Actinopterygii Woodward 1891 [Moore & Near 2020]
         Order Characiformes Goodrich, 1909 - characins
           01 Family Citharinidae Günther, 1864 - citharinids
           02 Family Distichodontidae Günther, 1864 - distichodontids
           03 Family Alestidae Cockerell, 1910 - African tetras
           04 Family Hepsetidae Hubbs, 1939 (1909) - African pikes
           05 Family Hemiodontidae Bleeker, 1859 - hemiodontids
           06 Family Parodontidae Eigenmann, 1910 - darter tetras
           07 Family Curimatidae Gill, 1858 - toothless characiforms
           08 Family Prochilodontidae Eigenmann, 1909 - bocachicos
           09 Family Anostomidae Günther, 1864 - toothed headstanders
           10 Family Chilodontidae Fowler, 1950, nom. illeg. - headstanders see Family Chilodidae Eigenmann, 1910
           11 Family Erythrinidae Valenciennes, 1847 - trahiras
           12 Family Lebiasinidae Gill, 1889 - lebiasinids
           13 Family Gasteropelecidae Bleeker, 1859 - freshwater hatchetfishes
           14 Family Ctenoluciidae Schultz, 1944 - pike characids
           15 Family Acestrorhynchidae Eigenmann, 1912 - freshwater barracudas and biting tetras
           16 Family Cynodontidae Eigenmann, 1903, nom. protect. - sabertoothed characids
           17 Family Serrasalmidae Bleeker, 1859 - piranhas and allies
           18 Family Characidae Latreille, 1825 - characids
           19 Family Crenuchidae Günther, 1864 - crenuchids