if you have like crazy colored salwater fish, and you use a blacklight for the tank instead of a regular light, will they're colors be all bright and fluorescent?
I have 2 glo-fish which appear to glow I have a orange on that glows pink and a yellow one that glows green. I use an ultraviolet black light on them. So yes I think that your colored fish would look fluorescent. Also at walmart they have glo-fish tanks that come with the black light and filtration decent size tank n and all in the box for $20.