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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.

Dorsal view of a Glossosoma (Glossosomatidae) (Little Brown Short-horned Sedge) Caddisfly Larva from the Yakima River in Washington
I caught this tiny larva without a case, but it seems to key pretty clearly to to Glossosomatidae. From there, the lack of sclerites on the mesonotum points to either Glossosoma or Anagapetus. Although it's difficult to see in a 2D image from the microscope, it's pretty clear in the live 3D view that the pronotum is only excised about 1/3 of its length to accommodate the forecoxa, not 2/3, which points to Glossosoma at Couplet 5 of the Key to Genera of Glossosomatidae Larvae.
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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Mystery Trout?
Jmd123
Jmd123's profile picture
Oscoda, MI

Posts: 2474
Jmd123 on Sep 10, 2011September 10th, 2011, 8:42 am EDT
When one is not in trout country, those bluegills, perch, and crappie make fine fly rod quarry. See my "Perch on the fly!" thread - and those came out of a "Designated Trout Lake", in which the trout were not hitting because the surface waters were still to warm so they were down deep. Thus, they provided me with some action while the trout proved unreachable (though they won't be in another month or so as the waters cool).

On the other hand, there is another Designated Trout Lake that I fish for brookies around here that apparently got perch in it through a bait bucket introduction (this is the story I was told anyway) and apparently it was detrimental enough to the trout fishery that the pond was drained for several years to get rid of them. There are still some in there - I've caught a couple on flies and I've seen them on a snorkeling trip there - but the brookies are doing just fine right now. Next time I catch a big perch out there though he may be headed for the freezer, and I'm sure the MI DNR would like that just fine. [UPDATE: a couple of friends of mine told me out there last night that a friend of theirs took 21 perch out of the pond - my only regret is that they didn't end up in MY freezer!]

I've had a number of instances where I have caught trout and warmwater fishes side by side, including a largemouth bass, rock bass, and several sunfish from the Pine River where I have also caught brookies, browns, and rainbows, and also in Missouri and Georgia. But, of course, when one is after trout, it's pretty easy to label everything else as "trash". I pulled a great big creek chub out of the Pine on a grasshopper imitation a couple of days ago, big enough that I did indeed think he was a trout before I saw that big black stripe on his side...I didn't begrudge him though, as I had already caught three trout (a brookie and two browns), and I know his offspring just might end up as trout food!

Jonathon
No matter how big the one you just caught is, there's always a bigger one out there somewhere...

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