.......................  ......Fly Fishing Yellowstone National Park

06/19/09


Fly Fishing Yellowstone - Golden Stonefly Nymphs

As I mentioned yesterday, like all stonefly nymphs, the Goldens crawl out of the
water to hatch. Normally they crawl out on the banks but it can be a large rock
protruding out of the water or even a log. They will move from their fast water
habitat in the riffles and runs to slower, shallower water in pockets along the
banks to crawl out. When this happens, the trout have a perfect opportunity to
eat them. They cannot hide down between and under the rocks and stones on
the bottom of the stream when they are migrating to the banks. They have to
expose themselves. Trout tend to feed on them along the banks when the hatch
starts because that is the easiest place for the trout to intercept them.

The Golden Stonefly nymphs are predators. It is possible to catch trout on
imitations of them anytime of the season because they do expose themselves to
feed. The nymphs take from two to three years to mature. The smaller, one-year
old nymphs are especially prone to getting caught in strong currents.

Nymph Presentation:
If you are fishing imitations of the Golden Stonefly nymphs before a hatch starts,
you should fish the fly on the bottom of the runs and riffles. Fish the stonefly
nymph just like you would a mayfly nymph when you are searching for trout in a
"no hatch to match" situation. Just make sure you keep the fly on the bottom.

When the nymphs begin to hatch they usually start crawling to the banks very
late in the day and continue through the evenings. We don't suggest you start
fishing the nymph imitation until late in the afternoon. They can also be effective
early in the morning during a hatch.

Present the fly out into the runs and riffles and bring it back all the way to the
bank. If you are fishing from the bank, you should stay away from the bank to
cast when it is possible to do so. This will help prevent spooking shallow feeding
trout along the banks. If the trees prevent casting from the banks and you are
wading, we suggest you use a down and across cast allowing the fly to swing
from the runs and riffles all the way to the bank. You accomplish this by making
a reach cast, reaching out towards the center of the stream, and then slowly
swinging the fly across to the opposite side all the way to the bank. You will
need to add a lot of weight to the fly to keep in on the bottom. If your fly stays
in the very fast water and there is no moderate to slow moving water near the
banks, then you are fishing in the wrong type of place. You want to select areas
where there is at least a small area of moderate to slow moving water along the
bank and fast moving runs and riffles out in the stream. The fly should stay on
the bottom, not mid-depth or near the surface.