I'd have to agree with sniper. Emeralds will eat fish that are dead or on their last leg maybe, but not a healthy fish. I started with 5 chromis and now have 3 left, one jumped and one just disappeared one day never to be seen again.
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