One of Montana's legendary trout flies, the girdle bug, was designed to imitate a large stonefly nymph, or "hellgrammite," as the local anglers on the Big Hole River call the big aquatic insects. Lost ...

Streamer flies can mimic a variety of forage, but none is more common than baitfish. Unlike dry flies that match floating insects, and nymphs that look like aquatic insects in their larval stages, ...