Gymnotus electricus
Date 1700-1880
Source: https://commons.wikimedia.org/wiki/File:Gymnotus_electricus_-_1700-1880_-_Print_-_Iconographia_Zoologica_-_Special_Collections_University_of_Amsterdam_-_UBA01_IZ15100127.tif

The electric eel (Electrophorus electricus) is an electric fish, and the only species in its genus. Despite the name, it is not an eel, but rather a knifefish. Electric eels inhabit fresh waters of the Amazon and Orinoco River basins in South America, in floodplains, swamps, creeks, small rivers, and coastal plains. They often live on muddy bottoms in calm or stagnant waters.