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)

Holocentropus Caddisfly Larva Holocentropus Caddisfly Larva

Dorsal view of a Holocentropus (Polycentropodidae) Caddisfly Larva from the Yakima River in Washington

This one seems to tentatively key to Holocentropus, although I can't make out the anal spines in Couplet 7 of the Key to Genera of Polycentropodidae Larvae nor the dark bands in Couplet 4 of the Key to Genera of Polycentropodidae Larvae, making me wonder if I went wrong somewhere in keying it out. I don't see where that could have happened, though. It might also be that it's a very immature larva and doesn't possess all the identifying characteristics in the key yet. If Holocentropus is correct, then Holocentropus flavus and Holocentropus interruptus are the two likely possibilities based on range, but I was not able to find a description of their larvae.

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.

Two-headed wild trout in Idaho

Konchu

Site Editor
Indiana

Posts: 498

Konchu on Mar 1, 2012March 1st, 2012, 4:40 am EST

Here's a Discovery article about a wild trout with two heads , found in Idaho. It might be linked to selenium pollution from a mine there. Thought this might be of interest.

Oldredbarn

Novi, MI

Posts: 2600

Oldredbarn on Mar 1, 2012March 1st, 2012, 6:08 am EST

Sobering stuff Luke! We went through this before in the east with the coal mines and native brookies...We treat fresh water, something we all need, in such a reckless manner.

I had a poli-sci professor in the 70's who used to talk about our "toilet bowl" mentality...He would say, "As long as it can be flushed away, down the drain, and away from us, we really don't give a damn it's effects for those downstream of us. It's no longer our problem."

Spence

"Even when my best efforts fail it's a satisfying challenge, and that, after all, is the essence of fly fishing." -Chauncy Lively

"Envy not the man who lives beside the river, but the man the river flows through." Joseph T Heywood

Konchu

Site Editor
Indiana

Posts: 498

Konchu on Mar 1, 2012March 1st, 2012, 7:10 am EST

Trouble is, and most people don't think about it, most of our drains are connected to someone else's faucet!

Entoman

Northern CA & ID

Posts: 2604

Entoman on Mar 1, 2012March 1st, 2012, 11:14 am EST

By that logic, so are our toilets. Hmmm... Glad I live "upstream"! :)LOL

"It's not that I find fishing so important, it's just that I find all other endeavors of Man equally unimportant... And not nearly as much fun!" Robert Traver, Anatomy of a Fisherman

Jesse

Posts: 378

Jesse on Mar 4, 2012March 4th, 2012, 8:59 pm EST

It truly is sad how we treat our water.. BLUE gold is the most prominent resource, i just hope it will always be around in a pure form!

Most of us fish our whole lives..not knowing its not the fish that we are after.
http://www.filingoflyfishing.com

GldstrmSam

Fairbanks, Alaska

Posts: 212

GldstrmSam on Mar 5, 2012March 5th, 2012, 8:56 am EST

It might be linked to selenium pollution from a mine there.

Selenium. Interesting. Up here we have so much selenium deficiency that I have to give selenium shots to my goats.

I am a strong supporter of mining, but still if you are going to mine then do it safely.

There is no greater fan of fly fishing than the worm. ~Patrick F. McManus

Konchu

Site Editor
Indiana

Posts: 498

Konchu on Mar 5, 2012March 5th, 2012, 2:15 pm EST

Notice I said "might." Some of these oddities occur for many other reasons. Often people find one unusual morph and draw unnecessary conclusions. Coincidence in time and space does not necessarily indicate a cause. On the other hand, it may very well be connected.