Problem With Chromis

[ed99]

I had the same problem- started with 7 chromis and ended up with 4 in a 92 gal. It seems if they are not threatened they will drop the schooling behaviour and become more territorial with each other. I have heard that adding a small damsel can add enough peskiness to the tank that the chromis will stay in a school but never tried that myself. There was a thread on this subject a little while ago, seems few people have success unless they have a large tank.