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|Noun||1.||order Anguilliformes - elongate fishes with pelvic fins and girdle absent or reduced|
animal order - the order of animals
Malacopterygii, superorder Malacopterygii - an extensive group of teleost fishes having fins supported by flexible cartilaginous rays
eel - voracious snakelike marine or freshwater fishes with smooth slimy usually scaleless skin and having a continuous vertical fin but no ventral fins
Anguillidae, family Anguillidae - eels that live in fresh water as adults but return to the sea to spawn