Thank you so much! She does have tank mates. I have 4 totally in a rather large aquarium. They have never had a fight that was bad enough to hurt someone. Just a bump every now and then. Yesterday I did a deep clean on the aquarium and got rid of the sand that was in there. The water quality is spot on, super clean and a good temp (I am working on lower the temp some) She is eating and moving around quite a bit, I've just never seen this before on them and I have had them all for about 2.5-3 years.