starry triggerfish hiders at first?

[Saltwater newbie]

I just got 2 new fish , a clown trigger and starry , already had a huma huma. the clown was out and swimming around the first day, however the starry has been hiding for 2 days now i've seem him come out once each day for about 30 secs then he goes back into the liverock and hides. I've read that sometimes they are very shy at first. But I was wondering how long will he be okay not eating and how long do they usually take to come out.

This tanks is going to be a trigger only tank with one wrasse.