A distinct classic Connemara sea-trout system with its own literary pedigree — T. C. Kingsmill Moore's Bumble tradition was born here — and still-credible current runs. IFI reporting notes improving sea-trout runs in 2025 after a slow start, and the 2023 season saw a big increase in sea-trout catches even when salmon were down. A chain of granite lakes connected by short river sections, draining through a brief tidal reach into Casla Bay. Fish move quickly through the system after rain; the sea-trout season runs 1 June to 30 September. Lake drifts with wet fly teams are the traditional method; river sections fish on the spate. Better-supported as a current sea-trout story than generic west-of-Ireland nostalgia, but still fundamentally water-responsive rather than calendar-reliable. For 2026 this remains an open fishery — salmon may be retained in season under the Wild Salmon & Sea Trout Tagging Scheme and bag limits, with catch-and-release at other times.
EPA kick-sample monitoring of the Costello/Fermoyle system (2009-2018) confirms mayflies, stoneflies, caddis, midges and blackflies, and freshwater shrimp (Gammarus) are all present in the aquatic food base. This is presence evidence from monitored waterbody segments only, not a record of emergence timing, abundance, or a visible hatch on the water.
- Lough system
- Granite
