Introduction: More Than Just a Bug When most people see a bug crawling on a riverbank, they swat it away. Anglers, however, know better. Stoneflies aren’t just another insect—they’re a signal of clean water, a seasonal feast for trout, and a key to unlocking better fishing. To understand stoneflies is to understand the river itself.  1. Meet the Stonefly •           Belong to the order Plecoptera, with over 2,000 species worldwide. • Distinctive features: elongated body, t