Nymph
Diving Caddis
Underwater egg-laying diver
Trout · GraylingSubsurface
Many sedges swim or crawl underwater to lay eggs — this wet, bubble-trapping dressing is swung in the film and just under to image the diving female.
Fish this when
On summer evenings once egg-laying sedges start diving back underwater to lay, swing this in the film with an active twitch rather than a dead drift.
Why it works
The dressing traps air the way a diving female does, and the darting retrieve copies her frantic swim back to the bed — a movement pattern trout single out from anything drifting passively.
Naturals it imitates
egg-laying female caddis diving subsurface
Typical zone & fishable range
usually
Surface
Film
Subsurface
Deep
Setup sensitivity: medium
Quick facts
Tying difficulty
Intermediate