Anthias are beautiful fish, but are heavy eaters and usually are required to be fed twice a day. Any sort of goby or blenny would work fine. My personal favorites are the Neon goby and the Tail spot blenny. Interesting fish with lots of personality. Red harkfish are also cool, but some have had problems with them eating their shrimp. Another interesting one is the Banggai cardinal fish, cool fish with interesting black and white patterns. Most wrasses would be a nice addition, like a flasher wrasse or 6line. Lastly, fire fish are really cool, but are jumpers so some sort of lid/grating might be helpful.