My b&w's are very peaceful, and I've had two sets of them, both very mellow.
I currently have one cleaner in my 29 cube and 3 peppermints. I was thinking of adding a fire shrimp myself, theya re so red and neat looking. I also have a very very mellow tank too. Not one semi aggressive fish in it, all are very very peaceful including my clowns. ( I will be moving the clowns out soon but plan on adding two other fish to finish up the stocking)
180g- Mostly BIG fish and some coral. ~80g Nuvo- My coral tank with "happy fish"~ 90g- FOWLR Not the not happy type of fish~ 125g- Freshwater Malawi Cichlids ~10g- Nuvo- The refugees from the Ich of '18