I have a 30 cube, and I’m undecided on what I want for my last fish. So far: pair of percs firefish hectors goby diamond goby I really like the different colors/shapes/personalities of all of the fish, but I’d love to have a fish that spends more time swimming in the water column. I have a peaceful mixed reef, so things like dwarf angels are out. I’m browsing fish online, but any suggestions are appreciated. Maybe a a pair of Chromis? Would an orchid dottyback (I absolutely LOVE this fish, but never had an opportunity to get a pair) be too aggressive if I only get one, as I don’t think I have room for a pair? Edit: I don’t care for cardinal fish of any color.