emerger
RS2
- Sizes
- #18
- Imitates
- BWO emergers · midge emergers · mayfly emergers
- Origin
- Rim Chung, 1970s
The RS2 (Rim's Semblance 2) is a devastatingly simple emerger pattern that hangs in the surface film imitating a mayfly struggling to shed its shuck. The CDC or poly yarn wing tuft and sparse beaver fur body create a delicate silhouette that fools the most selective tailwater trout.
Recipe
This is one dressing. Tie it in other colors to match the hatch in front of you.
Workbench
Variants
Swipe to see In box and Add
| Size | Bead | Body | In box | Add to box |
|---|---|---|---|---|
| #18 | tungsten · None | Gray | — | — |
At the vise
Tie in a micro-tail of hackle fibers, dub a wispy beaver body, and tie a small CDC or poly yarn wing tuft at the thorax.
Tying video
Fishing now on
Rivers whose hatch chart names this pattern this month. Names and sizes only.
- Arkansas River (Colorado)#16-20
- Barren Fork Creek#18-22
- Flathead River Middle Fork#18-22
- Flathead River North Fork#18-22
- Flathead River South Fork#18-22
- Frying Pan River#18-22
- Green River#18-22
- Henry's Fork of the Snake River#16-20
- Jefferson River#18-22
- Kootenai River (below Libby Dam)#18-22
- Little Manistee River#18-22
- Madison River#16-20
- Provo River#18-22
- Smith River#18-22
- Snake River (Wyoming)#16-20
- South Fork of the Boise River#16-20
- South Platte River#18-22
- Taylor River#18-22
On the water
Fish the RS2 unweighted in the surface film, either as a standalone or trailing 18 inches behind a visible dry fly. On tailwaters, it is deadly during BWO and midge emergence. Watch for subtle sipping rises and present with a drag-free drift.
History
Rim Chung developed the RS2 in the 1970s for the demanding tailwater trout of Colorado's South Platte River. The name stands for 'Rim's Semblance, version 2.' Its sparse design was revolutionary — proving that less material often catches more fish on pressured water.