eel

fish
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Also known as: Anguilliformes, anguilliform

eel, (order Anguilliformes), any of more than 800 species of teleost fishes characterized by elongate wormlike bodies. Anguilliforms include the common freshwater eels as well as the voracious marine morays. Regardless of their final habitat, all eels probably pass through the leptocephalus stage, an extended larval phase, in the open ocean and undergo metamorphosis to a juvenile stage that is a smaller version of the adult. At maturity eels range in length from 10 cm (4 inches), in the deep-sea Cyema atrum, to 3.5 metres (11.5 feet), in the moray Thyrsoidea macrura. Eels occur to considerable depths in most oceans ...(100 of 2182 words)