I got a clown tang from the lfs yesterday and he was doing fine all yesterday evening and i got home from work today and he is laying on the bottom of the qt. Just breathing heavy. No visible signs that i can see, no pinched stomach or white spots. Any ideas as to what it could be? The water is not even 24 hrs old. I do tank transfer method. No medication in the tank. I am assuming the only thing i can do at this point is wait it out. Temp and salinity is good. This one has me stumped.