STONEFLY NYMPHS

Stonefly nymphs are a staple food source for western river trout.  These big bugs live 2-4 years in the water before hatching, so this makes them available year round!  Make sure to always carry a variety of sizes and colors to match any possible stonefly species that may be lurking in the fast riffles.  Stonefly nymphs don't have well developed gills and must live in swift currents with plentiful oxygen in order to survive.