Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Teleostomi
       Class Osteichthyes Huxley, 1880 [paraphyletic] - bony fishes see [unranked] Euteleostomi
         Subclass Actinopterygii Woodward, 1891 - ray-finned fishes see Class Actinopterygii Woodward, 1891
           Infraclass Neopterygii Regan, 1923 see Subclass Neopterygii Regan, 1923
             Division Teleostei Müller, 1845 see Infraclass Teleostei Müller, 1845
               Subdivision Euteleostei Greenwood et al., 1966 see Cohort Euteleosteomorpha (Greenwood et al., 1966)
                 Superorder Stenopterygii [monotypic]
                   Order Stomiiformes Rosen, 1973 - dragonfishes see Order Stomiatiformes Rosen, 1973, orth. inval.
                     1 Family Gonostomidae see Family Gonostomatidae
                     2 Family Sternoptychidae Rafinesque, 1815
                     3 Family Astronesthidae see Subfamily Astronesthinae
                     4 Family Melanostomiidae see Subfamily Melanostomiinae
                     5 Family Malacosteidae see Subfamily Malacosteinae
                     6 Family Chauliondontidae see Family Chauliodontidae
                     7 Family †Protostomiatidae see Family Protostomiidae Arambourg, 1943
                     8 Family Stomiatidae Rosen, 1973, orth. inval. see Family Stomiidae Rosen, 1973
                     9 Family Idacanthidae see Family Idiacanthidae