Eel life history

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Eels are any of several long, thin, bony fishes of the order Anguilliformes. They have a catadromous life cycle, that is: they migrate from fresh water into the sea to spawn. Because fishermen never caught anything they recognized as juvenile eels, the life cycle of the eel was long a mystery. Of particular interest has been the search for the spawning grounds for the various species of eels, and identifying the population impacts of different stages of the life cycle.

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