Nine; see text Tetronarce is a genus of rays, commonly known as electric rays.

They are slow-moving bottom-dwellers capable of generating electricity as a defense and feeding mechanism.

Tetronarce species tend to attain a much larger size (up to 180 cm TL) than Torpedo species, which are usually small to moderate sized (range from 25 to 80 cm TL) electric rays.

[1] There are currently nine recognized species in this genus:[1]

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