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

06/30/09


Fly Fishing Yellowstone - Green Sedge Larva

The Green Sedges are one of the most important caddisflies there are. The
reason is the their larvae provides food for trout for most of their one year life.
The
Rhyacophila species are "free living" caddisflies. As I said yesterday, they
do not build cases to live in. They roam around on the bottom of the streams on
top of, down between and sometimes under the rocks on the bottom. The larva
iscalled the "Rock Worm". It looks like a little fat worm. The different species of
them are different sizes. Most all of them can be imitated with either a 18, 16 or
14 hook size fly.

It is easy to determine is when to imitate the larva. That is any day you are on
the water. You can catch trout any time of the season on imitations of the Rock
Worm. It is a very effective fly. The trout are very used to seeing them where
ever the water is moving fairly fast.

Presentation:
Imitations should be fished right on or barely above the bottom using a weighted
leader or fly. Make sure you use non-toxic weight. They can be presented either
on the swing or using a strike indicator. I personally prefer fishing without an
indicator but you can get by with it most of the time.

If you are fishing the runs, you may find that the "high stickin" method works
best. You will need to get fairly close to the fish to use this method, so the water
needs some depth and speed to help conceal your presence.

You can also fish them down and across like you would a soft hackle fly in the
smooth fast water such as you will find in the Yellowstone River below the lake,
and parts of the Madison and Firehole Rivers for example.