The Beadhead Brassie Nymph with both the pink body and green body work great in medium to fast moving water columns. Fly fishers have come to utilize this fly pattern very frequently when using hopper dropper rigs.
I will use this nymph in the middle or bottom of my 3-hook setup. I add a few split shots about 3 inches above the hook to help it sink faster. Normally, I will run a balloon style strike indicator that not only lets me know when a fish takes it, but I can also set the depth that I want my nymph fly patterns to be at.