Could one be kept for life in a 45 gallon bow front. I want to get some kind of fish for the top portion of my tank, but it seems like all the small fish like hatchet fish would get killed by one of my angelfish. Since pink tails are bigger could I house one in my tank for life? These guys are available at my lfs right now+ a 40% sale. They also have archer fish right now, but there are no freshwater archers at the moment.