Edited sentence: Because of the predatory nature and agressive behavior of Muskellunge, the fish present a major problem to the species native to those waterways.Currently Maine's native trout and salmon populations are threatend by Mukellunge, although the issue is contained to the Northernmost areas of Maine as the Muskies seldom venture to the warmer areas of the State.In some areas Muskellunge are considered an invasive exotic species.In those situations anglers are sometimes asked to destroy the fish.One such area which experiences such issues is Nothern Maine.To help control or remove the population, tournments may be held with prizes to encourage anglers to catch and keep the the Muskellunge out of the waterways