Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Anguilliformes
Suborder: Muraenoidei
Family: Chlopsidae (False Morays)
Genera: Boehlkenchelys; Catesbya; Chilorhinus; Chlopsis; Kaupichthys; Powellichthys; Robinsia; Thalassenchelys; and, Xenoconger
Family: Muraenidae (Moray Eels)
Subfamily: Uropterygiimae
Genera: Anarchias; Channomuraena; Scuticaria; and, Uropterygius
Subfamily: Muraeninae
Genera: Echidna; Enchelycore; Enchelynassa; Gymnomuraena; Gymnothorax; Monopenchelys; Muraena; Pseudechidna; Rhinomuraena; Sideria; and, Strophidon
Family: Myrocongridae (Thin Morays)
Genus: Myroconger
Suborder: Anguilloidei
Family: Anguillidae (Freshwater Eels)
Genus: Anguilla
Family: Heterenchelyidae (Mud Eels)
Genera: Panturichthys and Pythonichthys
Family: Moringuidae (Worm/Spaghetti Eels)
Genera: Moringua and Neoconger
Suborder: Congroidei
Family: Colocongridae
Genus: Coloconger
Family: Congridae (Conger Eels)
Subfamily: Bathymyrinae
Genera: Ariosoma; Bathymyrus; Chiloconger; Kenyaconger; Parabathymyrus; Paraconger; and, Poeciloconger
Subfamily: Bathymyrinae
Genera: Leptocephalus and Ophisoma
Subfamily: Congrinae
Genera: Acromycter; Bassanago; Bathycongrus; Bathyuroconger; Blachea; Conger; Congrhynchus; Congriscus; Congrosoma; Diploconger; Gavialiceps; Gnathophis; Japonoconger; Lumiconger; Macrocephenchelys; Paruroconger; Promyllanto: Pseudophichthys; Rhynchconger; Scalanago; Uroconger; and, Xenomystax
Subfamily: Heterocongrinae (Garden Eels)
Genera: Gorgasia and Heteroconger
Family: Derichthys (Longneck Eels)
Genera: Derichthys and Nessorhamphus
Family: Muraenesocidae (False Conger Eels/Pike Congers)
Genera: Congresox; Cynoponticus; Muraenesox; Oxyconger; and, Sauromuraenesox
Family: Nemichthyidae (Snipe Eels)
Genera: Avocettina; Labichthys; and, Nemichthys
Family: Nettastomatidae (Duckbill Eels, Serepntinas)
Genera: Facciolella; Hoplunnis; Nettastoma; Nettenchelys; Saurenchelys; and, Venefica
Family: Ophichthidae (Snake Eels, Worm Eels)
Subfamily: Myrophinae (Worm Eels)
Genus: Skythrenchelys
Tribe: Benthenchelyini
Genus: Benthenchelys
Tribe: Myrophini
Genera: Ahlia; Asarcenchlys; Glenoglossa; Mixomyrophis; Muraenichthys; Myrophis; Neenchelys; Pseudomyrophis; Schismorhynchus; and, Schultzidia
Subfamily: Ophichthinae (Snake Eels)
Genus: Rhinophichthus
Tribe: Bascanichthus
Genera: Allips; Bascanichthys; Caralophia; Dalophis; Ethadophis; Gordiichthys; Leptenchelys; and, Phaenomonas
Tribe: Callechelyini
Genera: Aprognathodon; Callechelys; Letharchus; Leuropharus; Paraletharchus; and, Xestochilus
Tribe: Ophichthini
Genera: Aplatophis; Brachysomophis; Echelus; Echiophis; Elapsopis; Evips; Herpetoichthys; Hyphalophis; Kertomichthys; Leiuranus; Lethogoleos; Malvoliophis; Myrichthys; Mystriophis; Ophichthus; Ophisurus; Phyllophichthus; Pisodonophis; Quassiremus; Scytalishthys; and, Xyrias
Tribe: Sphagebranchini
Genera: Apterichtus; Caecula; Cirrhimuraena; Cirrcaecula; Hemerorhinus; Ichthyapus; Lamnostoma; Stictorhinus; and, Yirrkaia
Family: Serrivomeridae (Sawtooth Eels)
Genera: Serrivomer and Stemonidium
Family: Synaphobranchidae (Cutthrout Eels/Deep Sea Eels)
Subfamily: Lyophinae (Arrowtooth Eels/Mustard Eels)
Genera: Atractodenchelys; Dysomma; Dysommina; Lyophis; Linkenchelys; Meadia; and, Thermobiotes
Subfamily: Simenchelyinae (Snubnose Parasitic Eels)
Genus: Simenchelys
Subfamily: Synaphobranchinae (Cutthrout Eels)
Genera: Haptenchelys; Histiobranchus; and, Synaphobranchus