I was wondering if these guys do better and may be a little bolder if kept in pairs or groups? I bought one 3 months ago only to never see it again after day one. I figured it was dead. However, today when I was taking extra rock out of the tote to take pics of it my Pom Pom crab crawled off of a rock!! I was totally shocked and excited! It’s going into my 25 gal but I was hoping there may be a way to make him come out more. Or am I at its mercy and luck of the draw as to whether or not I’ll see him again