Hes been great stays under his rocks usually has had a pistol shrimp as a buddy. The last 2 days he has been pretty restless and not hiding like he normally does and its hard to know if something happened to the pistol shrimp hes now resting wedged at the top of my tank. No labored breathing and looks calm but is there I can do to get him to settle back down? Is it because he might of lost the pistol shrimp?