what fish should I add in my RSM 130

[jhj0112]

Hi

I have a pair of clownfish, shrimp goby and clown goby in RSM130.
I want to add 1 to 2 fishes in the tank.

I have considered below fishes.

hawkfish
Dwarf angel ( either Coral beauty or Cherub)
Bangii cardinal

however, I understand hawkfish can/will kill my shrimp goby and may nip on corals, Dwarf angels are also aggressive and may pick on corals especially LPSs. I think Bangii cardinals are too small ( i still like them).

What you guys think?? I have LPSs in my tank ( Hammer, RBTA, Zoas, Acans) and want to add frogspawn or Anamone and possibly a small clam in the future.

Any suggestion is greatly appriciated