[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Pisces
     Class Osteichthyes Huxley, 1880 - bony fishes and tetrapods see Clade Osteichthyes Huxley 1880 [Moore & Near 2020]
       Order Anguilliformes Berg, 1943 - eels
         Family Congridae Kaup, 1856 - conger eels
           1 Genus Bathyuroconger Fowler, 1934
           2 Genus Conger Bosc, 1817
           3 Genus Gnathophis Kaup, 1859
           4 Genus Pseudophichthys Roule, 1915
           5 Genus Ariosoma Swainson, 1838
           6 Genus Paraconger Kanazawa, 1961
           7 Genus Heteroconger Bleeker, 1868