Whats wrong w/ clownfish?

[loveatfirstreef]

My two clowns finally decided to host my anemone. One of them is fine, but the other one twitches like crazy when it's in the anemone.

Problem??

 

[skippy2]

That's pretty normal for a clown.

 

[loveatfirstreef]

So it's not getting stung or anything? It doesnt do it when it;s not in the anemone