Just over a week ago I bought 3 blue springeri damsels. 2 of them were immediately joined by my yellow tail blue damsel. No arguments and now do their own thing. One of the springeri almost straight away started hiding close to my return inlets. No other fish bothered it. I then noticed it seemed to have a mouth problem. Really difficult to get a clear picture. It has tried to eat when I add food to tank. Today I did a bit of work on the tank and it moved, for the first time, to lower in the tank so I tried to get some pics. Does anyone know what it might be, and best course of action? All of the other fish are fine and acting normally.







