The largest of the Killarney lakes, holding wild brown trout, large ferox, Atlantic salmon, sea trout. Arctic char and Killarney shad are present but are protected/ecological species, not angling targets. Salmon enter via the Laune; the trout fishing peaks with the spring duckfly and mayfly. Atlantic salmon and sea trout are managed under IFI's Wild Salmon & Sea Trout Tagging Scheme — many rivers are catch-and-release and harvest is allowed only where a confirmed surplus exists, so check the river's current status before fishing.
Inland Fisheries Ireland's angling guide reports a strong duckfly hatch on Lough Leane typically running through late March and into April, though it gives no detail on time of day or weather triggers for the rise.
- Lough
- Old red sandstone

