Large Dark Olive Dun

Trout · GraylingSurface

The classic spring olive. When the LDAs come off on a cool March afternoon, this is the right silhouette.

Naturals it imitates

Baetis rhodani

Typical zone & fishable range

usually

Surface

Film

Subsurface

Deep

Setup sensitivity: low

How it's usually fished

Hatch-matchSurface
Tie on at the start of a hatch window and cover steady risers.
floating linelong tapered leader5x tippet

Hook range#14

Size by condition

Similar flies

Included in packs

Small-river dry essentialsHatch-match dries