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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.

Dorsal view of a Neoleptophlebia (Leptophlebiidae) Mayfly Nymph from the Yakima River in Washington
Some characteristics from the microscope images for the tentative species id: The postero-lateral projections are found only on segment 9, not segment 8. Based on the key in Jacobus et al. (2014), it appears to key to Neoleptophlebia adoptiva or Neoleptophlebia heteronea, same as this specimen with pretty different abdominal markings. However, distinguishing between those calls for comparing the lengths of the second and third segment of the labial palp, and this one (like the other one) only seems to have two segments. So I'm stuck on them both. It's likely that the fact that they're immature nymphs stymies identification in some important way.
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.
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ColoradoKen's profile picture
Granby, Colorado

Posts: 14
ColoradoKen on Oct 24, 2017October 24th, 2017, 2:53 am EDT
Hello all, i am seeking more information on the species of trout known as Ohrid Brown trout or simply Ohrid trout. Ive been fascinated with these fish since a presumed encounter on the north platte river in Wyoming below pathfinder Res. Ill share what little ive found out below via some links.




Im thinking that there is still a population on Ohrid trout in pathfinder res and also in the river below, specifically, maybe, the canyon stretch where the water becomes very deep and currents more lake like.

I also think ive encountered, through the process of catch and release, an Ohrid trout or two on or near private fishing ranches sections of the colorado river. Or.. more likely maybe, ive encountered brown trout/ohrid trout hybrids.

I wonder, for curiosity's sake, if hatchery Ohrid trout and/or Hybrids are available for purchase in america today. Cant seem to locate any hatchery "catalogs" or the like to comb through.

Here is a pic of my good friends daughter with a beautiful brown id say "looks" ohrid, to me anyway.

Tight Lines,
Jmd123's profile picture
Oscoda, MI

Posts: 2474
Jmd123 on Oct 24, 2017October 24th, 2017, 5:44 am EDT
Ken, the trout of Lake Ohrid, on the border between Albania and Macedonia if I'm not mistaken, are described and illustrated in James Prosek's Trout of the World. This is a beautiful book and should be on the shelf of anyone interested in the trout found elsewhere besides the US, and the variety is staggering!

No matter how big the one you just caught is, there's always a bigger one out there somewhere...
Troutnut's profile picture
Bellevue, WA

Posts: 2758
Troutnut on Oct 24, 2017October 24th, 2017, 7:26 am EDT
Interesting post Ken. I fixed the links and picture for you.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist
ColoradoKen's profile picture
Granby, Colorado

Posts: 14
ColoradoKen on Oct 24, 2017October 24th, 2017, 9:40 am EDT
thanks jason. Jonathon, ill put that book on my list to read this winter, thanks.
Tight Lines,
Iasgair's profile picture

Posts: 148
Iasgair on Oct 24, 2017October 24th, 2017, 12:31 pm EDT
Wow. That is something special no matter how you look at it. Nice size fish she is holding.

I have never heard of such a trout, and it surely doesn't belong here, but neither does the brown, rainbow, or brookie, just to name a few. But I'm not complaining. It's a beautiful fish no matter what.

Good job catching it, and I hope you find someone who has the answers to this fish mystery. And if you do, tell us about it.

Thanks for posting this.

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