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 Syngnathiformes Berg, 1940 - pipefishes and seahorses
           Family Aulostomidae Rafinesque, 1815 - trumpetfishes
           Family Centriscidae Bonaparte, 1831 - snipefishes
           Family Fistulariidae Stark, 1828 - cornetfishes
           Family †Fistularioididae Blot, 1981 see Family Fistulariidae Stark, 1828
           Family †Paraeoliscidae Blot, 1981
           Family †Parasynarcualidae Blot, 1981 see Family Fistulariidae Stark, 1828
           Family Solenostomidae Nardo, 1843 - ghost pipefishes
           Family Syngnathidae Bonaparte, 1831 - pipefishes and seahorses