In general a licence is not required to fish for trout in the Republic of Ireland – except in the Loughs Agency waters in counties Donegal and Louth as well as within Northern Ireland.
The majority of waters are owned either privately or by the State. Many are leased to angling clubs or associations.
Most fisheries have a bag limit that reflects the angling pressure that the fishery can sustain. However, where this is not specified anglers are requested to exercise constraint. Please consider ‘catch and release’ to ensure for the future of the sport.
Most trout fisheries open between February 15th and March 1st and close on September 30th with some exceptions that close on various dates between September 15th and October 12th. Some clubs may have their own regulations on opening and closing dates.
Rivers Laune and Killarney Lakes system license info:
http://www.fishinginireland.info/salmon ... /laune.htm