I would consider my chromis experience extensive lol. I had five a while back and they were cool for about 2 months. They then started picking each other off 1 by 1. When there was only one left he lived about a week. This time I tried just one for obvious reasons. He was looking good just really shy and hiding. Today when I got home from the LFS
after a perfect water test he was dead. Anyway this was within 7 days so I got a credit for him. I decided to put my clown in the tank and he is doing as good as ever so far. I thought the chromis was a hardy fish but I have heard of many stories like mine. I really want to have at least one so I guess I'll give the clown a while in there and try it again.