I bought 2 electric blue gold face rams 13 weeks ago. They were happy and healthy, I think, until I went on vacation for a week recently. I came back and they looked pale and had their fins clenched. I assumed it was because maybe they didn't care for the feeding blocks or the change in lighting while I was away and that it would pass. I came home today to one being eaten by the others in my community tank. The other still looks very unwell, I'm not sure if he's ill or stressed or what, or how to help him. Any information to help would be great. The first image is today, the second was a month or so ago. Thank you.