Marcusenius mento Marcusenius mento

Marcusenius mento is a mormyrid (elephant fish with a weak electric field for navigation, communication and hunting nocturnal prey). It has an elongated, dolphin-shaped body with a dolphinesque bottlenose and a thin, elongated caudal "wrist" and can grow to some 33cm long. It is native to river beds of West Africa.