Midge / EmergersGrannom Pupa and Ovi-Grannom

Natural Behavior: Grannom caddis pupae ascend through the water column during spring emergence windows, rising from riffle substrate toward the surface with gas bubbles trapped under their wing cases. These pupae exhibit jerky swimming motions during ascent, pausing mid-column before continuing upward through the film where they transform into adults.

Where Trout Eat It: Trout feed almost exclusively on grannom pupae during spring emergence windows when pupae rise toward surface mid-morning through noon.

How to Fish It: Swing weighted pupa with 3-inch pulls or dead drift under indicator allowing fly to lift at drift's end.

Best Water: Target riffle edges and current seams where ascending grannom pupae concentrate during synchronized emergences.

Strike Type: During the weighted swing with 3-inch pulls or dead drift under indicator, watch for subtle indicator hesitations or quiet sips as pupae rise. Gentle hook sets are essential when the indicator dips or the drift line tightens at drift's end.

Rigging Suggestions: Use a 12-15 foot leader with 6X-7X tippet. Fish alone or as a dropper beneath a small dry fly.

Seasonal Timing: Most effective during peak feeding periods at dawn and dusk. Water temperatures between 45-65°F typically produce best results.

Pro Tips: Sinks at a moderate rate depending on hook weight. The natural materials blend well with the aquatic environment.