Temp drop 20 degs. Regal tang acting funny

[dirty59rt]

This weekend it got real cold... and the heat went out. I had been using a kerosene heater but I shut it off before I went to sleep. It was freezing the next morning and the tank's temp went from 79 to about 60. Everything in it recovered except my blue regal tang. I got him about a week ago and he's been doin fine till this inccident. He laid in this little cave just breathing and lookin around. After I got the temp back up I fed them and he came out to eat as soon as he saw the food. But hes still lying on his side in that cave. Is he gonna make it? How can I help him?

 

[marrone]

I would think he should be fine, just really stressed out from the change in temp. He came out to eat which is a good sign so I would just give him time and he should be fine. Since Hippo tangs get ich very easy watch him close to see if he breaks out with some thing.