The Gave d'Ossau is upper Béarn — snowmelt-fed Pyrenean freestone dropping out of the Pic du Midi country and running north through the valley towards Oloron, where it feeds the bigger Gave system. It carries wild brown trout throughout its middle and upper reaches and holds them in the kind of fast, cold water that rewards anyone willing to get into it properly. The reaches around Laruns and Sévignacq-Meyracq are fly-only no-kill, barbless on a single hook, and the AAPPMA has been managing the fishing with more care than most. Tight-line nymphing with beadheads is the staple for the pocket water; by late June the caddis and olives start triggering genuine dry-fly windows in the evenings. Snowmelt keeps it cold into July, which means the prime window stretches further here than on the lower Gave — a Pyrenean river that looks like the postcard and fishes like one.
- Mixed