My Epaulette shark is suddenly not using his fins to walk and does this little thing where he swims for a few inches then rolls on his back and immediately flips himself back into his belly. For context I am currently out of town and I did a water change before I left and he ate for me the day before. I have a pet cube to watch my tank and I noticed him acting strange and flipping on his back then back on his belly. I have a 300 gallon tank and have kept sharks and rays before. I have been trying to figure out what it could be but i’m stumped. He literally started doing this a few hours after I left, I first notice it while I was at the airport. I was checking on him all morning and he was fine and acting normal and the minute I left he just seems to have completely fallen apart. All the coral and other fish are acting fine it’s just the shark. I do have a healthy population of beneficial bristle worms and a few days ago I caught him eating one in the middle of the night. Is their any possibility that he contracted some disease from the worm? I have a UV sterilizer and a protein skimmer. As far as I know the water quality should be on point. Can anyone please help? From the camera I can’t tell if her has any redness on his belly but i’m going to have my sister check for me. Also, sorry if my explanation sounds choppy I wrote this in a rush.