So I recently purchased two fish from blue zoo....(Most beautiful specimens of each I have ever seen)...did the acclamation worked good...the wrasse I got to kill a flatworm problem...and to save on shipping and it was on sale got a triggerfish...he was active during acclamation...but as soon as I put him in the tank he went in a hole and triggered (I looked it up and it said thats how it got the name)...but it's just been perched on the rocks only making an appearance for a few seconds and going back in...do they sleep? Is that how they sleep? How long until I should worry? It's approx 36 hrs in tank