The Woolly Bugger is one of the most recognized fly patterns the world over and for good reason. The woolly bugger is one of the most effective patterns on almost all species of fish: trout, steelhead, salmon, pike, perch, and bluegills to just name a few. From lakes, rivers, streams, ponds, irrigation ditches, saltwater, and very possibly your cat’s water bowl. No fly box should be without a woolly bugger.