Time to refer to my fish bible: "The life story of a fish: his manners and morals"

in the chapter about senses, subsection sight:
"Can fish tell color? There have been more experiments on this than anyother phase of the fish's vision. The answer is yes, as least in so far as the fisherman is concerned.

They conducted experiments with LMB in seperate, all white tanks. and fed them through different colored pipes. Some colors giving it a shock, and some giving it food.
The result was that it learned over time and stopped going to the shocking color, even when there was no shock, and still went to the feeding color even when there was no food.

but heres and interesting side note of the experiment:

"One of the first findings was that the untrained black bass, before conditioning had started, had a strong prefrence for red over all other colors."
"yellow was the next favorable"

hmmm theres something neat. doesnt exactly answer the question, and of course tanks are shallow and are full of clear waer, but an interesting note.

results:
"In the end, the expirements proved that bass could tell red from any other color with the xeption of violet and almost equally sure on yellow. greens and blues were the hardest for him to distinguish from each other and from black. Brightness proved to play no part, for not only was the bass able to tell the training red from any other shades of grey, but if he were offered some other shade of red, he would chose that over the greys.

after putting all of the color experiments togather in this book, they concluded that bass see's (colorwise) almost the same as we would if we were wearing a yellowish tinted pair of glasses.

just some interesting stuff for ya'll