Flash Marabou Leech - Leech. It can be almost guaranteed that most lakes in the United States and Canada will have some level of leeches in it. These critters are more frequently not blood suckers but get thrown in with that category as well. The Flash Marabou Leech does a spectacular job at imitating the Marabou leech this variant however has an addition of strands of flashabou running through it just enhancing the deadly potential of a already incredible fly.