Originally Posted by
Seattle
Copperband Butterflyfish
Really bad advice. It's a new tank, and still unstable. The tank is not suited for any such delicate fish, let alone one this fragile.
Good hardy beginner fish include clowns, gobies, basslets, cardinals, blennies, certain wrasses.
For a 75; pair of ocellaris clowns, a royal gramma or blackcap basslet, three pajama cardinals, a carpenter's flasher wrasse and a yellow watchman goby. All will stay small enough to keep forever, and all are reef safe. The midas blenny mentioned is also nice, but they can pick on smaller peaceful fish so add it last if you went with one.