Bowfin. Amia calva. The circular (heterocercal) caudal fin and the black eye spot give it away. Often confused with Channa species, it is native to the united states.
It's not a Pike Cichlid or a Bichir or a Bowfin. These are fish commonly mistaken for Snakeheads. But this is 100% a Snakehead, a member of the genus Channa (Asia) or Parachanna (Africa).