Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.
"They emerged from their shucks with such speed that I was usually left with an empty shuck and the subimago with which I was already familiar. I began to think that catching the trout was easier than catching the nymphs that the trout were catching."
Time of day: Dusk
Substrate: Silt and detritus, sometimes fine gravel and sand
Environmental tolerance: Low tolerance for pollution and warm water