Egg-sucking leeches are a winter favorite for steelhead but they work good for trout, char and salmon as well. The Moe Egg-Sucking Leeches use a hard epoxy-like egg that not only looks good but will stand up to lots of punishment from rocks and other underwater debris. Per 2. Sizes: 6, 4, 2. Colors: (003)Black, (012)Purple. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Flies.