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


Hiding From Trout

How trout see 1
How trout see 2
How trout see 3
How trout see 4

If the wild and native trout in the Streams of Yellowstone National Park see you,
it will be next to impossible for you to catch them. In order to hide from them, you
need to know a little about how a trout sees the world outside the water. The
subject is far to complicated to discuss in detail in a short article but thank
goodness, it isn't necessary. The
above links to some previous articles
gets into the trout's window of vision and how they see things both under and
above the water. For purposes of what I want to point out in this article, just a
little common sense and a little basic knowledge about how trout see is all you
need to help you prevent them from seeing you.

Trout don't see objects above the water, especially those at a distance, clearly.
To make it simple, lets just say they see things as a blur. They cannot see
anything in detail at a distance. A person standing twenty feet from them is just
a blurred image. Now for those who want to get picky, what I am about to say
isn't exactly technically correct but I am not writing a scientific paper. I am
describing how a trout sees someone trying to catch them. For all practical
purposes, I am being accurate.

What trout will notice, much quicker than anything else, is the
movement of an
object above the water
. They are used to seeing blurred images of objects
above the water that remain fairly still. Trees and boulders don't move around a
lot. Overhead predators pose a danger to them. Large birds and a animals pose
a danger to trout. When something moves above the water, it gets their
attention. The bottom line to this is that you should
move as little as possible
and when you do move,
move as slowly as possible. Of course, it is difficult
to cast without moving.


Copyright 2009 James Marsh