The electric eel, Electrophorus electricus, is a species of fish. It is capable of generating powerful electric shocks, which it uses for both hunting and self-defense. It is an apex predator in its South American range. Despite its name it is not an eel at all but rather a knifefish.
L. Brent Vaughan Hill's Practical Reference Library Volume II (NewYork, NY: Dixon, Hanson and Company, 1906)