I would mix it up. Right now it seems like you have larger, or Open Water fish. I would personally add different shaped and sized fish as well as colors and patterns that live in different areas of the tank. Fish that live in the sand, amongst the rock work, etc. Take advantage of the huge variety of saltwater fish available. Good luck.Anthias,
ANY fairy wrasses since you have a BB
BANGAI’s
Firefish
Dart fish
Are all pretty good options.