This specific artificial fly is a streamer, designed to imitate baitfish and attract predatory game fish. It typically features a black body, white or silver hackle, and a wing constructed from white or grizzly hackle feathers. Anglers utilize it across various freshwater environments, often targeting species like trout and landlocked salmon.
Its effectiveness stems from its high visibility and suggestive silhouette in the water. The contrasting colors create an appealing target, triggering predatory instincts. Developed in the early 20th century, this design has a long-standing history of success and remains a staple in many anglers’ fly boxes due to its proven track record and adaptability to different fishing conditions.