Muddler Minnow Brown - Muddler Streamer. Another vary popular variant of the Muddler Minnow is the Brown Muddler Minnow which has become a worldwide success, this fly is known widely across Canada, the United States and Great Britain especially. Used with devastating effectiveness for a variety of trout including: brown trout, rainbow trout, steelhead, brook trout, and cut throat trout.