The Alligator Gar ("Gator Gar"), Atractosteus spatula, is a primitive ray-finned fish. Unlike other Gars, the mature Alligator Gar possesses a dual row of large teeth in the upper jaw. Its name derives from the alligator-like appearance of these teeth along with the fish's elongated snout. The dorsal surface of the Alligator Gar is a brown or olive-colour, while the ventral surface tends to be lighter. Their scales are diamond-shaped and interlocking (ganoid) and are sometimes used by Native Americans for jewellery. Along with its status as the largest species of Gar, the Alligator Gar is the largest exclusively freshwater fish found in North America, measuring eight to ten feet and weighing at least 200 lb (91 kg) at maturity. The current world record for the largest Alligator Gar caught on rod and reel is 279 lb (127 kg).[2] The largest taken by Bowfishing is 365 lb (166 kg).[citation needed] The fish is also known for its ability to survive outside the water, being able to last for up to two hours above the surface.