Header image
Enter a name
Lateral view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the Namekagon River in Wisconsin
Hex Mayflies
Hexagenia limbata

The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.

Enfield Creek in New York

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)
Tricorythodes (Trico) Mayfly NymphTricorythodes (Trico) Mayfly Nymph
Dorsal view of a Tricorythodes (Leptohyphidae) (Trico) Mayfly Nymph from Mystery Creek #308 in Washington
9 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.

  1. Trout Streams
    2. ›
  2. Wisconsin
    3. ›
  3. The Marengo River

  1. Trout Streams
    2. ›
  2. Wisconsin
    3. ›
  3. The Marengo River

Landscape & scenery photos from the Marengo River

A storm recedes over the boggy headwaters of a nice trout stream. I haven't seen any trout in this stretch, but it's a good place to collect burrowing mayfly nymphs. From the Marengo River in Wisconsin
The Marengo River in Wisconsin
This is one of my favorite small-stream pools because it's so fishable. The little stream holds brookies, browns, and rainbows in equal number, never spectacular, but there's always a little something. From the Marengo River above Four Corners Store Road in Wisconsin
The Marengo River above Four Corners Store Road in Wisconsin
The Marengo River above Four Corners Store Road in Wisconsin
I had excellent luck sampling burrowing mayfly nymphs here in the headwaters of a trouty small stream. From the Marengo River in Wisconsin
I had excellent luck sampling burrowing mayfly nymphs here in the headwaters of a trouty small stream. From the Marengo River in Wisconsin

Videos from the Marengo River

Another Hexagenia

Featuring: Hexagenia limbata Mayfly Nymph
Added by Troutnut on Mar 30, 2006
Ephemera 2

This little Ephemera nymph swam around for a while and tried to burrow into the sand in my photography tank.

Featuring: Ephemera simulans Mayfly Nymph
Added by Troutnut on Mar 30, 2006

Closeup insects by Troutnut from the Marengo River in Wisconsin

7
Ephemera simulans (Brown Drake) Mayfly Nymph
Ephemera simulans (Ephemeridae) (Brown Drake) Mayfly Nymph from the Marengo River in Wisconsin
3
Caenis (Angler's Curse) Mayfly Nymph
Dorsal view of a Caenis (Caenidae) (Angler's Curse) Mayfly Nymph from the Marengo River in Wisconsin
7
Female Baetisca laurentina (Armored Mayfly) Mayfly Dun
Artistic view of a Female Baetisca laurentina (Baetiscidae) (Armored Mayfly) Mayfly Dun from the Marengo River in Wisconsin
9
Eurylophella temporalis (Chocolate Dun) Mayfly Nymph
Dorsal view of a Eurylophella temporalis (Ephemerellidae) (Chocolate Dun) Mayfly Nymph from the Marengo River in Wisconsin
6
Stenacron interpunctatum (Light Cahill) Mayfly Nymph
Dorsal view of a Stenacron interpunctatum (Heptageniidae) (Light Cahill) Mayfly Nymph from the Marengo River in Wisconsin
4
Hexagenia limbata (Hex) Mayfly Nymph
Dorsal view of a Hexagenia limbata (Ephemeridae) (Hex) Mayfly Nymph from the Marengo River in Wisconsin
1
Centrarchidae (Sunfish and Bass) Fish Adult
Lateral view of a Centrarchidae (Sunfish and Bass) Fish Adult from the Marengo River in Wisconsin
This is a Pumpkinseed sunfish, Lepomis gibbosus, which I caught unexpectedly in a trout stream a year before I started this site.
Troutnut.com is copyright © 2004-2024 (email Jason). privacy policy