Transparent Eel

transparent-eel

Leptocephali all have laterally compressed bodies that contain transparent jelly-like substances on the inside of the body and a thin layer of muscle with visible myomeres on the outside. Their body organs are small and they possess only a simple tube for a gut. This combination of features results in them being very transparent when they are alive. While leptocephali have dorsal and anal fins that are confluent with caudal fins, they lack pelvic fins. They also lack red blood cells until they begin to metamorphose into the juvenile glass eel stage when they start to look like eels. Leptocephali are also characterized by their fang-like teeth that are present until metamorphosis, when they are lost.” w/ photo

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