See text The family Torpedinidae contains 22 species of electric rays or torpedoes, flat cartilaginous fishes that produce electricity as a defense and feeding mechanism.

The largest species is the Atlantic torpedo, Tetronarce nobiliana, which can grow to a weight of 90 kg (200 lb) and deliver a 220-volt electric shock.

Tissue from electric rays is often used in neurobiological research because of its unique properties.

The young emerge from the eggs within the body of the female, and she gives live birth.

The naval weapon known as the torpedo was named after this genus, whose own name has the same Latin origin as the English word torpid, meaning "sluggish" or "lethargic", presumably the sensations one would feel after experiencing the ray's electric shock.