Bubble Back Caddis

Harrop’s Bubble Back Caddis is a highly effective emerger pattern designed to imitate the vulnerable moment when a caddis rises through the surface film with a gas-filled bubble at its back. Created by the Harrop family on the Henry’s Fork, the fly uses a translucent wing case and sparse body to capture that shimmering, trapped-air appearance trout key on during heavy caddis activity.

Fish it behind a dry Elk Hair Caddis as a trailer in riffle water—trout often ignore the adult and focus on the vulnerable pupae ascending in the film.