フライ・フィッシング
Fly fishing for trout is a very popular sport, which can be done using any of the various methods and any of the general types of flies. Many of the techniques and presentations of fly fishing were first developed in fishing for trout. There is a misconception that all fly fishing for trout is done on the surface of the water with "dry flies." In most places, especially heavily fished trout areas, success usually comes from fly fishing using flies called "nymphs" that are designed to drift close to the riverbed, also called "nymphing". A trout feeds below the water's surface nearly 90 percent of the time. Trout usually only come to the surface when there is a large bug hatch (when aquatic insects grow wings and leave the water to mate and lay eggs). There are exceptions to this rule, however, particularly during the summer months and on smaller mountain streams, when trout often feed on terrestrial insects such as ants, beetles and grasshoppers.