Conehead Muddler Minnow Marabou Brown - Conehead Muddler Streamer. The Brown Marabou Conehead Muddler Minnow is a very productive Steelhead and Trout lure when utilized properly. Used in rivers this fly is an excellent searching pattern, especially in rivers that are either high or cloudy. This is due to the disturbance this fly creates in the water when the angler is retrieving it.