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During the considerable periods of time trout spend feeding exclusively on underwater food forms, nymph fishing can be the most productive, if not the only, way to catch fish. Whether you're new to fly fishing or a longtime angler trying to better understand nymph fishing, you want to be current with all the information about insects, fish, and tactics. The fact that you have to understand what occurs below the water's surface, where you can't see what's happening, makes nymph fishing more challenging than just about any other method of fly fishing. Aquatic entomologist and long-time fly fisherman Rick Hafele shares the information necessary to successfully decipher the mysteries of trout life. The 90-minute DVD presents basic instruction on nymph fishing techniques and complements the color photo sequences in the book that show various methods for nymph fishing. Included is an angler's field guide to nymphs--describing in detail their habitat, behavior, importance to trout, and the most effective patterns and fishing tactics to imitate them.