Help-Koran not eating

[Pansy-Paws]

Our new Koran angel stopped eating yesterday

We got him on Saturday (and had seen him eating at the LFS on Thursday) and he ate like a pig on Saturday night and Sunday. Then yesterday, he wouldn't look at any food. Same today. We're feeding him frozen Mysis shrimp or Mega Marine Angel - and adding drops of X-treme Garlic. We tried a fresh clam last night, but still no eating. Put some nori in the tank - doesn't look at it.

He's in our quarantine tank and we checked the water parameters and all is normal. He's slightly more reclusive than he was on the first couple of days, but seems fine except for the eating problem.

I know Angels can be hard to start feeding (our lovely Flagfin Angel didn't have any problems, though) but he was so good to begin with :? I'm sure getting worried. Does anyone have any suggestions :?: