Alligator gars (Atractosteus spatula) are among the largest freshwater fish in North America. These fish can grow up to around 8 feet in length and weigh more than 300 pounds, according to the TPWD.

Alligator gars (Atractosteus spatula) and longnose gars (Lepisosteus osseus) are known to hybridize in the rivers of Texas and Oklahoma. Other gar species have produced hybrids as well.