Clownfish Ich?

[likwid]

Hey There,

I just purchased another clown fish for my tank to go along with the clownfish that has been in there for a few months. I slowly acclimatized the new one, and then put her in the tank. She has been breathing heavily, stays at the bottom of the tank, doesnt swim around too much, does not eat, and I have noticed it has a few tiny white spots on it. Does it have a case of Ich? My other clownfish is still very normal and extremely active. How should I go about treating this? Should I isolate the fish with Ich, or treat them both now since they are in the same aquarium?