Anguillavidae (2)
Anguillidae (freshwater eels) (39)   (4)
Anguilloididae (1)
Chlopsidae (False moray) (27)
Colocongridae (Duckbill eel) (11)
Congridae (conger eels and congers) (301)
Deprandidae (1)
Derichthyidae (longneck eel) (3)
Encheliidae (1)
Heterenchelyidae (Eel) (10)
Libanechelyidae (1)
Milananguillidae (1)
Moringuidae (spaghetti eels and worm eels) (20)
Muraenesocidae (false conger eels and pike congers) (27)
Muraenidae (moray eels and morays) (286)
Myrocongridae (Red eel) (6)
Nemichthyidae (snipe eels) (12)
Nettastomatidae (duckbill eels) (56)
Ophichthidae (snake eels and worm eels) (396)
Paranguillidae (2)
Patavichthyidae (1)
Phyllodontidae (14)
Protanguillidae (1)
Proteomyridae (1)
Serrivomeridae (sawtooth eels) (12)
Synaphobranchidae (cutthroat eels and deepsea eels) (58)

Abisaadia (1)
Bolcanguilla (1)
Dinelops (1)
Gazolapodus (1)
Hayenchelys (1)
Laytonia (2)
Luenchelys (1)
Mastygocercus (1)
Muraenanguilla (2)
Mylomyrus (1)
Raia (2)
Urenchelys (3)

(...) = Species count
(...) = Endangered count
(...) = Invasive count