I just purchased this Mappa Puffer from my LFS and have him in quarantine! He is about 6” long. Is this normal for his face to not be puffed out! It looks like his cheeks are sucked in! He is not interested in clams on the half shell or other larger foods! He well nip at frozen brine shrimp that I feed to the other fish in quarantine but overall hasn’t really eaten anything yet and I have seen him bite at some live rock that is in the tank! I got him on Wednesday!