What would be the max size tang that would be comfortable in a 72inch by 19.5inch by 24 inch tank? I want to add a bigger tang to add some movement to my tank but with an active fish I'm not sure how big I can go without it being to the fish's detriment. Would 12 inch max size be pushing it? The tank is only 6x the fish's length at that point. What fish would you put in the tank? Ive always focused on coral but I would like some active fish to fill the open space in my tank lots of swimming space. I'm going to my LFS in a couple hours they have a pretty good fish selection.