The estate holds fishing rights over stretches of the Roughy and Slaheny rivers. Salmon use both of these rivers for spawning and Brown Trout are also to be found. For the last number of years the fishing rights have been annually leased out to the Kilgarvan Roughty Anglers, but is available to guest of Sillahertane House.
Both rivers offer excellent fishing, although fly-fishing is very challenging due to the amount of trees and other vegetation along the banks of the rivers.
