So I’ve got a 30 gallon with a pair of saddleback clownfish, a pajama cardinal, and a midas blenny. I would like to add one more fish. I’ve narrowed it down to a dwarf angel, an azure damsel, and a yasha goby/pistol shrimp. I know damsel or angel would be more aggressive but better coloring. Yasha and pistol would be cool though. Any recommendations? And if I get a dwarf angel, which one would be best, like cherub, coral beauty, flame back, etc. thanks!