The Grey Scud Nymph (Gammarus Imitation) is a highly effective subsurface pattern designed to represent freshwater shrimp, a constant and reliable food source in both rivers and stillwaters. Scuds are especially common in weedy margins, slower glides and limestone or chalk streams, where trout and grayling feed on them throughout the year.
Tied in muted grey tones, this pattern focuses on realism rather than flash. The curved profile and soft materials help create a natural shape that closely resembles a drifting shrimp as it tumbles along the current. It’s a dependable choice when fish are feeding near the bottom or when traditional insect patterns are being ignored, making it a strong searching nymph in clear water and pressured fisheries.
Please note all of our fishing flies are barbless unless otherwise stated.
Grey Scud Nymph (Gammarus Imitation) Specification
Tail - Cock Grey
Body - Seals Fur Grey, Weighted
Rib - Nylon
Horn - Cock Grey
Head - Black Silk
Hook - Barbless, Mustad of Norway
Target Species - Trout & Grayling
How To Fish the Grey Scud Nymph (Gammarus Imitation)
Upstream Natural Drift
Present the fly upstream or slightly up-and-across and allow it to travel naturally along the riverbed. Maintain gentle contact and watch for subtle hesitations, as takes on scud patterns are often delicate.
Czech Nymphing
When fishing a Grey Scud, Czech nymphing is one of the most effective methods for presenting the fly naturally along the riverbed where scuds are commonly found. This close-contact nymphing style keeps the angler in direct control of the drift, usually at short range in faster riffles where trout actively feed. The Grey Scud is fished just below the rod tip using a long leader with little or no fly line outside the tip and a Czech-style indicator for bite detection. This tight-line approach maximises sensitivity, helping you feel subtle takes as the fly bounces and drifts naturally through the feeding zone.
Klink and Dink / New Zealand Style
Suspend the scud beneath a buoyant dry fly in a classic Klink and Dink or New Zealand style rig. The dry controls depth while the scud drifts below, covering both the surface and subsurface feeding zones at once, a very effective approach when fish switch between shrimp and emerging insects.
