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Leptocephalus larva of a conger eel 7.6 cm
Leptocephali have flat bodies filled with jelly-like substances, surrounded by a thin layer of muscle. Their gut is a simple tube, and they lack pelvic fins.
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Leptocephali have flat bodies filled with jelly-like substances, surrounded by a thin layer of muscle. Their gut is a simple tube, and they lack pelvic fins.