Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York

Blue-winged Olives
Baetis

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.

Stream photos

Featured on the forum

Re: Trico emergers
In the Mayfly Genus Tricorythodes by Bwoklink (Martinlf replied)

Re: Trico Tips
In the Mayfly Genus Tricorythodes by Martinlf

Re: UV spectrum and trout
In General Discussion by Martinlf

Re: closing the gender gap in flyfishing
In General Discussion by Konchu (Smallflyguy replied)

Re: Fishing Kupa River, Slovenia
In Fishing Reports by Slocum (Fish1 replied)

Perlodidae (Springflies and Yellow Stones) Stonefly Nymph Perlodidae (Springflies and Yellow Stones) Stonefly Nymph

Artistic view of a Perlodidae (Springflies and Yellow Stones) Stonefly Nymph from the Yakima River in Washington

This one seems to lead to Couplet 35 of the Key to Genera of Perlodidae Nymphs and the genus Isoperla, but I'm skeptical that's correct based on the general look. I need to get it under the microscope to review several choices in the key, and it'll probably end up a different Perlodidae.

11 Recently Added Photos

27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.

Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Troutnut.com User Creno (Dave Ruiter)

Warning: Trying to access array offset on value of type null in /home/jasonn5/func/commoncontent.fnc on line 668

Warning: Trying to access array offset on value of type null in /home/jasonn5/func/commoncontent.fnc on line 669

Warning: Trying to access array offset on value of type null in /home/jasonn5/func/commoncontent.fnc on line 670

Warning: Trying to access array offset on value of type null in /home/jasonn5/func/commoncontent.fnc on line 837

Warning: Trying to access array offset on value of type null in /home/jasonn5/func/commoncontent.fnc on line 838

Warning: Trying to access array offset on value of type null in /home/jasonn5/func/commoncontent.fnc on line 839

Warning: Trying to access array offset on value of type null in /home/jasonn5/func/urls.fnc on line 81

Warning: Trying to access array offset on value of type null in /home/jasonn5/func/urls.fnc on line 82

Warning: Trying to access array offset on value of type null in /home/jasonn5/func/urls.fnc on line 83

Error: Problem with location id=169.
array_map <— {closure} <— getMixedPostsHTML <— getMostRecentPostHTML <— getPostHTML <— printPageBody <— cc_printPageFromTemplate

Real Name

Dave Ruiter

Location

Grants Pass, OR

Biography & Thoughts

Dave Ruiter (username Creno) was one of the all-time most valuable and prolific contributors to the Troutnut.com community, generously sharing his deep knowledge as a professional caddisfly expert and helping me with countless caddisfly identifications. Sadly, he passed away in 2021 at age 73. On Trichoptera.org I found a touching tribute to him and wanted to share it in his profile here. —Jason/Troutnut