Do you love big bluegill?
This article is geared towards the trout man, but it surely has wider application. All fish essentially see the same way, considering they share the same environment. HOW they perceive what they see as food is the trick - it accounts for WHY they will take a little bit of fluff and fur and call it dinner.
You may find it interesting
(thanks to Midcurrent.com)
I don't fly fish, but this article helps describe fish perception and memory, which is useful anytime. Good article.