Ok....here is some info I dug up.........Fish do see in colour!...Both "rods" and "cones" are present in fish eyeballs. The three chemicals that allow humans to see our seven colour spectrum are also present, as well as a fourth, common to most predators, that permit them to see into the UV range. This is important because two flies that look identical to us can look very different to fish because they see colours we don't see.
Fish eyes are set in the side of their heads ( I know.....not all are, but most of the fish we fish for here do). That means they do not have "binocular vision" as humans do.
Their depth perception is very poor and most of them have a blind spot straight ahead.. This is alleviated by the shape of the retina (fish eye lens). They have poor distance vision, and excellent vision "up-close"....This may be why fish don't stray too far from their feeding lanes.......they simply have trouble seeing food at a distance....................Hmmmmmm

More later........Ortho 8)