Fishes Class Actinopterygii Woodward, 1891 - ray-finned fishes see Clade Actinopterygii Woodward 1891 [Moore & Near 2020] Order Anguilliformes Berg, 1943 - eels Family Synaphobranchidae Johnson, 1862 - cutthroat eels 1 Subfamily Ilyophinae Jordan & Davis, 1891 - arrowtooth eels 2 Subfamily Synaphobranchinae Johnson, 1862 - cutthroat eels 3 Subfamily Simenchelyinae Gill, 1879 - pugnose parasitic eels