Tank is young, about two months old. Was cycled and then I added two Blue-Green Chromis and a Scarlet Skunk Cleaner Shrimp. Got an Emerald Crab, Blue Porcelain Crab, and Banded Clinging Crab as Hitchhikers. I'm thinking of adding one more fish, either another Chromis or a Firefish. Wanted some more experienced opinions and possibly options.