There are several species of Drac.... all are marginal plants. Roots like to be wet, and leaves in the air. It is almost certainly a Dracena.
Plant one, as indicated above looks like a Myriophyllum species. If not the one mentioned by Sparky ( pinnatum ) then possibly Myriophyllum heterophyllum. It does not look like Myriophyllum mattogrossens. That is Water milfoil or Parrot feather if you want a common name.