Jared Ehlers of TheFlyFishers.com demonstrates a classic, stand-by trout fly fishing nymph: the Prince Nymph. Effective in a variety of sizes from big 10s and 8s down to small 16s and 18s. Play with your colors as well, throw in some rust or purple dubbing in place of the peacock herl body. If you are fly fishing for trout, your fly box needs a few Prince Nymphs.