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

New KISS Bug Series - Part 11

Non Insect Trout Food -  Crustaceans and other trout foods

Yes, I know crustaceans are not bugs and maybe this should be the KISS Trout Food series but
never-the-less, I'm covering them.

Scuds are found in both stillwaters and streams but in Yellowstone National Park, most of them exist in the
lakes and ponds. Many anglers refer to them as shrimp. They are members of the class Crustacea, order
Amphipoda. Scuds' are distant cousins to the crayfish, sowbugs and shrimp. They can swim but they do so
it a quick and erratic manner. They usually swim six to twelve inches at a time and then pause for a few
seconds. Trout love them.

Scuds are sensitive to light. That means the best time to imitate them is under low light conditions during
the day or in the evening. They prefer weedy place but they can also be found in other areas.

Sowbugs exist in some of the lakes, slow moving streams, ponds, and other waters of Yellowstone. Where
they exist in large quantities they represent a large part of a trout's diet. They live down in between and
under the gravel on the bottom of streams. They are sometimes found in the same water scuds exist in.
They crawl around on the bottom rather than swim.

These crustaceans tend to live in concentrations, not just scattered about. You may find them in one area
and a short distance away there may not be any.

For the most part, Crayfish, also called Crawfish, are not very common in Yellowstone National Park waters
but they do exist and where they exist they can be an important part of the trout's diet. Basically, the water
is too warm for them in the park. They are common on the lower Madison and Yellowstone rivers.

Fish Eggs:
Fish eggs are found in every stream and lake in Yellowstone park and if they were not, you wouldn't have
any gamefish, would you. Do fish eat them. You better bet they do. Some consider using imitations of fish
eggs unsportmanlike and others don't.

Oh yes, trout will eat mice and they do accidentally get into the water. The brown trout is especially fond of
them but my guess is all of the species of gamefish eat what the Coyote's leave them.

Copyright 2012 James Marsh