congo eel

US /ˈkɑːŋɡoʊ iːl/
UK /ˈkɑːŋɡoʊ iːl/
"congo eel" picture
1.

a large, eel-like salamander (Amphiuma means) native to the southeastern United States, having two pairs of tiny, vestigial limbs.

:
The Congo eel, despite its name, is an amphibian, not a true eel.
The murky waters of the swamp are home to the elusive Congo eel.