Egg Sucking Leech Black-Red Head - Leech. The Egg Sucking Leech Black - Red head originated in Alaska for all the Rainbow Trout and Salmon in the area. The flies were such a huge success that they then moved to other parts of the world. Now they are one of the most popular flies used in the spawning season as the Egg Sucking Leech Black with Red Head resembles a Muddler eating an egg, this creative combination produces devastating results. The messier that the Egg Sucking Leech Black with Red Head is the better it tends to work better when the fly isn't all symmetrical and perfect to look at.