Mine has seemed to finally decided on it's home, been working on it all day- so have I, providing rubble- ran out of small coral and have been breaking up ceramic discs- they say they need a deep bed, this one is making it's own- took a break for a while and covered the hole up with some rubbleThere's a video somewhere of multiple Pearly Jawfish in one tank. Each had a hole in the sand, and each bobbed up and down in their own hole. It was really neat looking!