I have 110 gal tank with a Purple Tang, Lawnmower Blenny, Diamond Goby, one Blue Chromis & a Mandarin....I would love to add another algae eating tang but I don't want the tang police to haul me away....Any good colorful choices...There are soft & hard corals in the tank, also a cleaner shrimp, banded serpent star & numerous snails....any ideas????