The fly fishing leader serves multiple purposes in fly fishing. It is a tapered, transparent monofilament line that connects the fly line to the fly. The main purposes of a fly fishing leader are to provide a smooth transition of energy from the fly line to the fly, to present the fly delicately and accurately on the water, to help turn over the fly during the cast, and to provide a level of invisibility to the fish. The leader also helps to prevent drag on the fly by allowing it to float or sink naturally in the water, mimicking the behavior of insects or baitfish.

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Casting Fly Fishing Presentation Leader Invisibility Purpose