i am wondering that since a male betta is a rather slow fish with long fins, if he could be put in a tank with something like a slow, fancy goldfish of the same size? if it was just tho 2 of them in there, it makes sense (to me anyways) that in a large tank, they would probably leave eachother alone... or maybe, the betta would go after the goldfish... just pondering, wasnt gonna try it (love my guys to much to have them get killed), but that would be awesome if they could just live in harmony. wondering what other people think...