Caddis‑driven twilight on the River Test
Stockbridge: River Test caddis‑driven twilight
At Stockbridge on the River Test evening caddis emergences push brown trout out of holding lies into a razor‑short surface and just‑subsurface feeding window, often visible only as splashy rises or bulges in the last light.
Anglers sight‑fishing those calm glides and bubble lines do best with a dry caddis and a trailing pupa. A dry caddis with a dropper 15–18 inches behind covers the sequence: the surface adult, the emergent and the submerged pupa.
What to present
When trout are taking the film, present an Elk Hair Caddis or X‑Caddis. If rises are splashy or porpoising, switch to a soft hackle or caddis pupa sunk just below the film. On smooth water, a down‑and‑across or slightly downstream cast reduces drag and keeps the fly in the strike zone.
Leader and tippet choices matter in low light: a 9 ft #4 or #5 rod and fine tippet—5X–7X—gives the delicate presentation required, though heavier tippet is useful as dusk deepens or fly size increases.
The clearest cue that the hatch is on is rising trout with few visible insects—caddis adults diving to lay eggs while trout intercept pupae beneath the surface—and the feeding window can stretch into near darkness as trout keep taking emergers and diving adults beneath willow shadows.
Recommended: lightweight fly rod