I found my Fl. Snapper floating with his rear out of the water this morning, like in the picture. His was was extremely dirty after being completely changed out 2 days ago. I did give him about 6 shiners yesterday. I changed his water again today and while he was out, he was able to walk around. The turtle is usually extremely aggressive but isn't today. I'm sure something is wrong but don't know what and most importantly, don't know how to fix it.
Any ideas?

