This morning my tiger and pistol shrimp pair were doing great. They came out together, the shrimp looked normal and was tidying up the place from there sleep that night. However, he went inside his cave around mid day, and hasnt come out since. And now my YWG won't go to sleep or enter his cave at all. He just sits right outside of it with his back end inside the tunnel. Is he protecting the shrimp while he's molting?