Xenia Troubles?

please help me i just got a xenia a few days ago and its been doing great but i just saw it close all its little hands or polyps i really dont know what its called it has its normal pink color but they are all closed up kinda looks like its sleeping is this normal?

 

Did you dose any chemicals in your tank..? Also mine would do the same if a invert would crawl on it as a deffensive mesure....

 

no i havent dosed any chemicals, i gave my fish brine shrimp to eat and made sure the xenia got some like an hour ago, i mean it hasn't changed color i believe its ok, i just want to make sure. srry for the picture quality i took it with my phone.

 

Totally normal. No worries.

 

They usually close up at the end of the day. Did it open at all during daytime?

 

yes its back to normal thank you everyone for worrying