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.
This nymph is about an inch long.
This mayfly was collected from Big Brook in Wisconsin on March 9th, 2004 and added to Troutnut.com by Troutnut on January 25th, 2006.