I ordered a jawfish at my lfs, they ordered two and they paired up during QT. So I bought both. Brought them home two days ago. The larger of the two went to work building it's den the smaller made a quick and dirty den and chilled out in it all day. Today I wake up and the smaller one burrowed out to the other side of the rock, right next to the larger one's den. Larger one wasn't anywhere to be seen...until one of my kids noticed it was burried up to it's eyeballs in the sand right next to the glass. What is going on here anything to worry about?