BH Brassie - Bead Head. A newer generation nymph imitation, the Brassie Beadhead has excellent sinking properties. This fly should be fished sub surface varying the sink time until the feeding depth is achieved. The Bead Head Brassie works well as a midge, mayfly, PMD or Blue winged olive representation. I have used this fly to gear success on the Grand River in Ontario, Canada.