Marbled electric ray

Torpedo marmorata

Also calledTremielga / Torpedo (Spanish) · Torpille marbrée (French) · Torpedine marezzata (Italian) · Ra''ād (Arabic, 'thunderer') · Narke (Ancient Greek)

A round, marbled ray that stuns prey with shocks of up to about 200 volts from paired electric organs. The ancient Greeks and Romans used it to numb pain, and its electric organs later helped scientists discover how nerves signal.

The marbled electric ray is a species of electric ray in the family Torpedinidae found in the coastal waters of the eastern Atlantic Ocean from the North Sea to South Africa. This benthic fish inhabits rocky reefs, seagrass beds, and sandy and muddy flats in shallow to moderately deep waters. It can survive in environments with very little dissolved oxygen, such as tidal pools. The marbled electric ray has a nearly circular pectoral fin disc and a muscular tail that bears two dorsal fins of nearly equal size and a large caudal fin. It can be identified by the long, finger-like projections on the rims of its spiracles, as well as by its dark brown mottled color pattern, though some individuals are plain-colored. Males and females typically reach 36–38 cm (14–15 in) and 55–61 cm (22–24 in) long respectively. Wikipedia