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.
Obviously shot out of the water. Would love to see how they distribute underwater. Seems like a great place for a trout fry to station. Which also suggests why the eggs are so often laid beneath larger substrate out in current. Trout fry and other tiny fry would be relegated to quiet currents near shorelines. Wonder how often these hatching larvae feed sculpins and dace?
Millcreek on Feb 8, 2018February 8th, 2018, 1:45 am EST
I remember watching some rainbow fingerlings and California roach feeding in a small pool.Instead of facing into the current as was usual they were facing the bottom and picking up something there. I got curious and waded out for a couple of small rocks. Washing them off and looking at them under a microscope, I found hundreds of small baetid and caddisfly larvae about 1-2 mm.
"If we knew what it was we were doing, it would not be called research, would it?"