Royal Gramma behaving differently

[phoon]

Hi everyone,
I am new to this group, but made the account in hopes of receiving advice for my situation. I have had my tank going for over a year now, with no hiccups thankfully. But today I noticed my Royal Gramma behaving completely different almost like ill. She seems to be sitting in a corner of the tank trying to squeeze herself in almost scared. Her normal territorial cave is still there but empty, I did a recent 25% water change and the parameters seem to be all right and the other fish in the tank seem to be doing just fine. I do not know what to do or how I can help her in this situation. Any advice would be appreciated.

 

[1112-425XL]

Any new additions? Any possibility of aggression towards it?
Could just be reacting to the commotion from the water change.

 

[phoon]

Any new additions? Any possibility of aggression towards it?
Could just be reacting to the commotion from the water change.

Not sure, I have never seen any aggression from any other tankmates to her in the past year, no new additions in a year either. Thats whats confusing me, the ocellaris pair, watchman goby/pistol shrimp, and 1 emerald crab have never shown any aggression towards her. I am genuinely confused, she has now moved since to a different side beside some rocks but in the same state.