Evening caddis and sedge on the River Test
River Test at Stockbridge shows short, splashy dusk rises
On the Test the evening caddis run turns brown trout into brief, concentrated diners: bulging, porpoising or splashy rises that take ascending pupae and newly emerged adults just under the film.
Reading seams and rise types
Fast seams produce splash and bulge; slower glides and slack margins yield quieter rolls and dorsal-fin breaks. The clearest sign is trout rising with nothing obvious on the surface—they are working emergers or drowned pupae below the film.
Stalking works best from the twilight edge of the hatch: approach low, stop short of the first rise line, and cover the inside seam, tail of the glide, and margins where emergers collect. Fish often take in thin water near the seam lip rather than mid-channel.
Gear that matches the Test is a 9 ft 5 wt rod with floating line and a long leader of 12–15 ft tapered to 4X–5X. Carry an Elk Hair Caddis, a deer-hair sedge and darker caddis sizes 12–16; when fish bulge but refuse, switch to a slightly drowned emerger profile and fish deeper into the softer water.
Evening on the chalkstream: a trout lifts, the film breaks and the pale flash of a caddis disappears into the ripple.
Recommended: dry fly pack