living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Count: 4k;54p;156c;911o;7123f;17,575g;4762s;36ss;8v;19; ‡1f;6g;7s;1ss; †1c;10o;10f;19g;1s
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
  Count: [c] 2k;51p;154c;900o;7001f;17,209g;4300s;33ss;8v; ‡1f;6g;7s;1ss; †1c;10o;10f;19g;1s
     Kingdom Animalia Linnaeus, 1758 - animals
    Count: [c] 38p;101c;595o;5766f;13,419g;3233s;32ss;3v; ‡1f;6g;7s;1ss; †1c;9o;10f;16g;1s
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
      Count: [c] 29p;70c;458o;5094f;11,476g;2933s;31ss;3v; ‡1f;6g;7s;1ss; †1c;8o;10f;11g;1s
         Phylum Chordata Bateson, 1885 - chordates
        Count: [o] 10c;115o;905f;3134g;786s;13ss; ‡1f;6g;7s;1ss; †1c;3o;2f;1g
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
          Count: [f] 7c;109o;885f;3075g;781s;13ss; ‡1f;6g;7s;1ss; †1c;3o;2f;1g
             Class Osteichthyes Huxley, 1880 - bony fishes see [unranked] Euteleostomi
            Count: 35o;434f;1220g;256s
               Subclass Actinopterygii Woodward, 1891 - ray-finned fishes see Class Actinopterygii Woodward, 1891
              Count: [f] 31o;429f;1214g;250s
                 Order Anguilliformes Rafinesque, 1810 - eels
                Count: 21f;24g;13s
                   Suborder Anguilloidei Rafinesque, 1810
                  Count: [f] 18f;20g;12s
                     01 Family Anguillidae Rafinesque, 1815 - freshwater eels
                    Count: [g] 1g
                     02 Family Heterenchelyidae Regan, 1912
                    Count: 1g;1s
                     03 Family Moringuidae Gill, 1885 - spaghetti eels
                    Count: [g] 2g;1s
                     04 Family Nemichthyidae Kaup, 1859 - snipe eels
                    Count: -
                     05 Family Cyematidae Regan, 1912 - bobtail eels
                    Count: [*] 1g;1s
                     06 Family Xenocongridae Regan, 1912 - false moray eels see Family Chlopsidae Rafinesque, 1815
                    Count: 1g
                     07 Family Myrocongridae Gill, 1890
                    Count: 1g;1s
                     08 Family Muraenidae Rafinesque, 1815 - morays
                    Count: 1g;1s
                     09 Family Synaphobranchidae Johnson, 1862 - cutthroat eels
                    Count: 4g
                     10 Family Simenchelyidae Gill, 1879 see Subfamily Simenchelyinae
                    Count: [*] 1g;1s
                     11 Family Dysommatidae Gill, 1893 see Family Synaphobranchidae Johnson, 1862
                    Count: -
                     12 Family Macrocephenchelyidae Fowler, 1934 see Family Congridae Kaup, 1856
                    Count: [*] 1g;1s
                     13 Family Congridae Kaup, 1856 - conger eels
                    Count: 1g;1s
                     14 Family Muraenesocidae Kaup, 1859 - pike conger eels
                    Count: -
                     15 Family Nettastomatidae Kaup, 1859 - duckbill eels
                    Count: 1g
                     16 Family Serrivomeridae Trewavas, 1932 - sawtooth eels
                    Count: -
                     17 Family Ophichthidae Günther, 1870 - snake eels and worm eels
                    Count: 2g;2s
                     18 Family Derichthyidae - longneck eels
                    Count: 2g;2s