I'd say no to any tang if its the same as my tank 36x18x24. I wouldnt get a copperband butterfly either. So far I have a lawnmower blenny, and 2 black false percula clownfish. I'm going to get a Royal Gramma Basslet, and a fairy wrasse. That will probably be the end of my stock list. I was planning on getting a flame angel, but since im planning corals down the road I decided against it.
125gallon - 3 Giant Danios - 1 7" Jack Dempsey - 1 5˝" Green Terror - 1 9" Lutino Oscar
65RR - SW - 30g Sump w/fuge - 40lbs MI LR 30lbs Base - 4-5"Sand Bed - 2 false black perculas, 1 six line wrasse, 1 peppermint shrimp, 6 zebra hermits, 6 blue leg hermits, 6 nassarius snails, 6 astrea snails