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 c
1881, An Anatomy of the Eel in search of Reproductive Organs
Leptocephalus larva of an ocean eel
Glass eels at the transition between ocean and fresh water; the skin is still transparent and the red gills and the heart are visible; length about 8 cm
Juvenile eels, length about 25 cm