(Hayvan Bilim, Zooloji) The alligator gar, Atractosteus spatula, is a primitive ray-finned fish. It is also referred to as the gator gar. Unlike other gars, the mature alligator gar possesses a dual row of large teeth in the upper jaw. It is these remarkably alligator-like teeth which gives it its name. The dorsal surface of the alligator gar is a brown or olive-color, while the ventral surface tends to be a lighter color. Their scales are diamond-shaped and interlocking (ganoid) and were once used by Native Americans for jewelry