Animalia Linnaeus, 1758 - animals
   Craniata Linnaeus, 1758 see Subphylum Vertebrata Cuvier, 1812
     Pisces
       Actinopterygii Woodward, 1891 - ray-finned fishes
         Characiformes Goodrich, 1909 - characins
           01 Citharinidae
           02 Distichodontidae
           03 Alestidae Hoedeman, 1951
           04 Hepsetidae
           05 Hemiodontidae
           06 Parodontidae
           07 Curimatidae
           08 Prochilodontidae
           09 Anostomidae
           10 Chilodontidae Eigenmann, 1903
           11 Erythrinidae - trahiras
           12 Lebiasinidae
           13 Gasteropelecidae - freshwater hatchetfishes
           14 Ctenoluciidae - pike-characids
           15 Acestrorhynchidae
           16 Cynodontidae
           17 Serrasalmidae Günther, 1864 see Subfamily Serrasalminae
           18 Characidae - characins
           19 Crenuchidae