Pisces Class Actinopterygii Woodward, 1891 - ray-finned fishes Order Anguilliformes Rafinesque, 1810 - eels 01 Family Anguillidae Rafinesque, 1815 - freshwater eels 02 Family Heterenchelyidae 03 Family Moringuidae - spaghetti eels 04 Family Chlopsidae Rafinesque, 1815 - false morays 05 Family Myrocongridae 06 Family Muraenidae Rafinesque, 1815 - morays 07 Family Synaphobranchidae - cutthroat eels 08 Family Ophichthidae - snake eels and worm eels 09 Family Colocongridae 10 Family Congridae - conger eels 11 Family Muraenesocidae - pike conger eels 12 Family Derichthyidae - longneck eels 13 Family Nemichthyidae - snipe eels 14 Family Serrivomeridae - sawtooth eels 15 Family Nettastomatidae - duckbill eels