Well it is a relatively small tank, but here are a few fish that you would have to choose one or two of:
*royal gramma
*oscelaris clowns
*clown gobies: black, green, brown, yellow, citrinis, or panda.
*firefish, purple, red or helfrichi.
*six line wrasse
*bicolor blenny
*red striped goby
*cave transparent goby
*watchman goby
*jawfish, yellowhead
*kaudern's carnial
*bicolor pseudochromis
*purple pseudochromis
*purple stripe pseudochromis
*shrimp: peppermint, skunk cleaners, blood red fire, coral banded, etc.
*emerald crab
etc..etc..etc.
There is soo many, this is just a few of them. Well, hope i helped!