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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 Zapada cinctipes (Nemouridae) (Tiny Winter Black) Stonefly Nymph from the Yakima River in Washington
Nymphs of this species were fairly common in late-winter kick net samples from the upper Yakima River. Although I could not find a key to species of Zapada nymphs, a revision of the Nemouridae family by Baumann (1975) includes the following helpful sentence: "2 cervical gills on each side of midline, 1 arising inside and 1 outside of lateral cervical sclerites, usually single and elongate, sometimes constricted but with 3 or 4 branches arising beyond gill base in Zapada cinctipes." This specimen clearly has the branches and is within the range of that species.
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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Flybyknight
Milton, DE

Posts: 82
Flybyknight on Mar 18, 2007March 18th, 2007, 1:18 pm EDT
OK, you arrive on a spectacular tail water fishery where you know there are 20"+ holdovers; fly fishing only, catch and release, barbless hooks, and no stock fish.
It is cold, raw and not a sign of insect activity anywhere. Water temperature is 42° high and clear.
You know that the following insects are present in either riffles, or pools that you may either wade or drift:
Taeniopteryx
Strophopteryx
Epeorus
Apatania
Baetis
(Dip net yields no insects because the river is wide and deep)

What is your game plan?

Streamers?
or
weighted 2X black nymph on the bottom with 3 droppers?
or?
And what flies would you start off with?
(Yes I have a bad case of pattern anxiety)
Dick
Lightly on the dimpling eddy fling;
the hypocritic fly's unruffled wing.
Thomas Scott
GONZO
Site Editor
"Bear Swamp," PA

Posts: 1681
GONZO on Mar 18, 2007March 18th, 2007, 1:27 pm EDT
Hi Dick,

Personally, the closer the water temperature gets to 40 degrees the more my confidence plummets. But then, I'm not much of a winter fisherman. I doubt that many fish would chase a streamer, though one might nail it if you put it on the fish's nose. I'd dredge with nymphs--and pray for warmer weather! :)
Martinlf
Martinlf's profile picture
Moderator
Palmyra PA

Posts: 3047
Martinlf on Mar 18, 2007March 18th, 2007, 1:53 pm EDT
Yes, too cold for streamers--nymphs on the bottom. Fish them slow and deep.
"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell
Troutnut
Troutnut's profile picture
Administrator
Bellevue, WA

Posts: 2758
Troutnut on Mar 18, 2007March 18th, 2007, 2:22 pm EDT
I would fish a Taeniopteryx nymph deep, with a smaller but gaudy attracting dropper.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

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