The RS2 fly or ‘Rays Semblance’ is a pattern that was developed in the early 1970s by American angler Rim Chung. Don’t be fooled by this simple little fly, it almost alway produces favorable results when fished. It’s probably best known as the go to pattern for a blue winged olive emerger, but it also has many variants that can be fished under most circumstances the whole year round. It can be fished as a dry fly, emerger or nymph for both midges and mayflies.

RS2 fly is, in my humble opinion, one of the best fishing flies ever designed. If you haven’t fished with the RS2 fly, you don’t know what you have been missing. Tie a couple of these up in # 18, 20 and the next time that fish are rising, but whatever you try won’t work, tie one of these on…It’s a game changer!

RS2 fly pattern recipe

Hook: Mustad R50 # 16-24
Tying thread: Sheer 14/0 Olive
Tail: Micro fibbets
Abdomen: SuperFine dubbing Brown/olive
Wing Buds: Blue dun CDC
Thorax: SuperFine dubbing Brow/olive

RS2 fly pattern video

RS2 fly variations and colors

Quill RS2 fly

Quill RS2 fly recipe

Hook: Mustad R50 # 16-24
Tying thread: Sheer 14/0 Tan
Tail: Micro fibbets Grey
Abdomen: Green peacock quill
Wing Buds: White Para-post
Thorax: SuperFine dubbing Rust

Adams RS2 fly

Adams RS2 fly recipe

Hook: Mustad R50 # 16-24
Tying thread: Sheer 14/0 Grey
Tail: Micro fibbets Brown & Barred
Abdomen: SuperFine dubbing grey
Wing Buds: White calf tail
Thorax: SuperFine dubbing grey

Black Gnat RS2 fly

Black Gnat RS2 fly recipe

Hook: Mustad R50 # 16-24
Tying thread: Sheer 14/0 Black
Tail: Micro fibbets Black
Abdomen: SuperFine dubbing Black
Wing Buds: White closed cell foam
Thorax: SuperFine dubbing Black