Ruby Eyed Leech - Black/Red
Another great pattern from Brian Chan, author, speaker, biologist, and angler from the Kamloops area of British Columbia. The Ruby Eye Leech has it all -- multi-coloration in the body, a tiny conehead for an undulating motion in the water, and a small red glass bead that seems to be some kind of magical fish call to stillwater trout. Get 'em while they're hot.
Size 8 hook.
Also see the Balanced Leech version of this fly.