I would like to use your mention of fluorescent yellow to make a point or ask a question. So we can assume from the test that a bass can indeed see what we call fluorescent yellow, a color that appears as a very bright yellow to humans, our optic nerve passes a signal to the visual cortex or our brain and fluorescent yellow is seen as a bright yellow color to us. So what about a bass, as mentioned we can assume that the bass can see fluorescent yellow, but what we don't know is how a fishes optic nerve processes that information and sends it to the the visual cortex of their brain. They may interpret fluorescent yellow as a checkerboard, or something that we cannot even comprehend.
So when someone says a bass can see green, it only means that a bass can see what we interpret as green, it may be something entirely different to them, or not.