Phylum Chordata Bateson, 1885 - chordates
   Subphylum Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
     Pisces
       Class Actinopterygii Woodward, 1891 - ray-finned fishes see Clade Actinopterygii Woodward 1891 [Moore & Near 2020]
         Order Stomiiformes Rosen, 1973 - dragonfishes
           Family Astronesthidae see Subfamily Astronesthinae Günther, 1864
           Family Chauliodontidae see Subfamily Chauliodontinae Bonaparte, 1845
           Family Gonostomatidae Cocco, 1838 - bristlemouths
           Family Idiacanthidae see Subfamily Idiacanthinae Gill, 1893
           Family Malacosteidae see Subfamily Malacosteinae Gill, 1890
           Family Melanostomiidae see Subfamily Melanostomiinae Parr, 1927
           Family Phosichthyidae Weitzman, 1974 - lightfishes see Subfamily Stomiinae Bleeker, 1859
           Family †Protostomiidae Arambourg, 1955
           Family Sternoptychidae Duméril, 1805 - marine hatchetfishes
           Family Stomiidae Bleeker, 1859, nom. praeval. - dragonfishes