fish vision- zeroing in on lunch

i often wonder how fish see our flies.
we know that the vast majority of fish can see but we have no exact idea how they see.

constantly intrigued and amazed that they could mistake our imitations or suggestive flies to the point where they’ll feel confident enough to open their mouths, further questioning their visual capabilities… i guess i’m glad they do because fly fishing would become boring really quickly if they never did.

here’s an imaginative and highly inaccurate yet hopefully, visually pleasant rendition of the last second before a fly is taken.

'how they might see our flies' M.Fauvet:TLC 6-10-14