[Quinn]

Originally Posted by Tarolisol

Now how on earth did they disover this. Scientist cant even figure out for sure if dogs see in black and white or colour, how can the decide a fish does.

Scientists can and do know that dogs can see some colours, and apparently can see into the infrared part of the spectrum. You can test colour vision in animals very easily, by conditioning them to respond to one colour and seeing if they respond to a different colour of the same intensity (to control for differences in grayness). The retinas of different animals also explain their varying ability to see colour. For instance, humans have three types of cones (RGB), while stomatopods (mantis shrimps) have over a dozen... I wonder how much more they see than we do.

Originally Posted by Fish

Or how do I even know that the way colors look when I see them are the same as what you see?

I've often wondered this and don't know for sure, but I would venture to say the mathematical models we use to understand colour would prove that your green is also my green... I should take the time to find out for certain.