During the considerable periods of time trout spend feeding exclusively on underwater food forms of aquatic insects, nymph fishing can be the most productive, if not the only, way to catch fish. Whether you're new to fly fishing or an experienced angler trying to better understand nymph fishing, you want to be current with all the information about insects, fish, and tactics. 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. In Nymph-Fishing Rivers and Streams,aquatic entomologist and longtime fly fisherman Rick Hafele gives you what's necessary to successfully decipher the mysteries of trout life. He starts by explaining their feeding patterns—where trout feed, when they feed, how they feed, and what's available for them to eat. Sections on tackle and pattern selection help anglers sort through equipment and imitations to find the most desirable outfit for their nymph-fishing needs. The 72-minute DVD, Nymph Fishing Basics, 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 these aquatic insects.