Koga's Bonefish Shrimp fly pattern, designed by Peter Koga, has the right balance of lifelike imitation, color, and weight. Dubbing for the body gives the fly a narrower profile, allowing it to sink faster, and gives it a greater chance of settling upright on the bottom. The slimmer body also contributes to the fly swimming in the upright position more frequently during stripping and the retrieve. Imported. Sizes 4, 8.