The Alligator Gar (Atractosteus spatula) is a (freshwater) species of Gar from the family Lepisosteidae and the genus Atractosteus. This fish is native to rivers in mainly Mississippi and Texas. It is capable of growing up to about 10 - 11 feet, and about 320 pounds. This fish is blamed for many vicious attacks because of its ferocious teeth, but Jeremy Wade from River Monsters pretty much concludes that the animal is harmless to humans. Its diet consists mainly of fish smaller than it.
This fish is very popular for game, particularily from netters and bowfisherman.