The Tamar divides Cornwall from Devon along almost its entire length and remains, despite stock decline, the largest salmon river of the south-west. The lower beats around Endsleigh sit on slow, wooded water below Greystone Bridge — long the centre of Tamar salmon fishing. The middle river runs through farmland past Launceston; the upper Tamar above Holsworthy is small and intimate wild trout water, more tributary than salmon river. The Gunnislake fish counter has documented the long decline of the run since the 1980s. Sea trout fishing on the middle and lower river from mid-June is among the best in the south-west; salmon are fished strictly catch-and-release, and the autumn beats — when there is water in them — give the most consistent sport. Atlantic salmon are assessed by the Environment Agency against each river's Conservation Limit — many principal rivers are classed 'at risk' with mandatory catch-and-release byelaws; check current rules before fishing.
Summer-autumn runs (June–September), nocturnal peak season pattern
- Mixed