I have a 14 gallon AIO with 3 peppermint shrimp and one purple firefish. First of all, my purple firefish is always very scared and I'll walk into the room quietly and he'll swim back very frightened. What should I do because I had a red firefish a few years go was always very comfortable around me. What should I do? Also, I'd like to have 3 fish in my 14 gallon. My purple firefish, maybe a clownfish, and something else. That "something else" I was thinking about a baby yellow watchman goby. They grow rather to 4 inches but should I worry? Also, what about a 6 lined wrasse. I've heard they're aggressive but I know they're good for a nano. Finally, what about a mandarin goby (dragonette)? I know I'd need copepods and my tank has had livestock for about two months now and been cycling since Christmas. What should I do????!!!!!