Nymphs:
Stonefly nymphs are far more important than the adults from a fly-fishing
standpoint. They represent a large part of the diet of the trout. There are (9)
nine families of stoneflies found in trout streams. Of all the families present, the
Perlodidae and Peltoperlidae families usually represent more than any of the
others in terms of sheer numbers.

The species of the Periodidae family, the most important one, differ in size but
their basic color and shape is very  similar. Species of the Peltoperlidae family
are shorter and more rounded than the Periodidae species but all the species
within the family are very similar in shape and basic color.

Like all stoneflies (with rare exceptions), the Little Yellow Stoneflies
crawl out of
the water to hatch.
The nymphs are much more susceptible to being eaten by
trout when they migrate from their normal locations down in between and under
rocks on the streambed to the banks to hatch.

When there is no hatch taking places, the stoneflies are basically safe from the
trout. It is not unusual for one to become dislodged and to subject to being
eaten. They don't show up that regular in drift samples; however, and I doubt it
is a frequent occasion. Behavioral drifts, which usually occur under low light
conditions or during the night, don't have substantial numbers of stonefly
nymphs.

There are so many different species of stoneflies including the Little Yellow
species, there is a hatch occurring more often than you would think. The bottom
line to this is that your odds of success are good if your are fishing stonefly
nymph imitations most any time. Trout eat them whether they are hatching or not.
Of all the Little Yellow species, the Yellow Sallies provide the best opportunity for
anglers. They often deposit their eggs during the daytime, whereas many other
stonefly species do so during the evening hours.

(Click Here to Continue with Fishing the nymph)
Copyright 2013 James Marsh
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