Tetronarce puelcha, commonly known as the Argentine torpedo, is a species of fish in the family Torpedinidae. It is found in Argentina, Brazil, and Uruguay. Its natural habitat is open seas. It is an electric ray fish species found in South West Atlantic (mostly in Argentina and Brazil). It is moderately large at a length of .
It was first described in 1926 as Torpedo puelcha by Fernando Lahille.