Do you have any Cipro? I would keep on hand and treat at first sign of deflation, mouth continues opening, etc. Is it just getting acclimated? Doesn't look great, but have seen plenty worse. I personally treat all of my nems upon arrival. Also, S.Haddoni are sand dwellers. It would help to have at least a 2" sandbed or put a PVC pipe in filled with sand and hope he's happy where you place hem. Good Luck.