Pistol Shrimp & Yasha Goby
 

my pistol shrimp seems to be closing off the burrow and trapping the Yasha inside for the past two days or so.

I opened a passage yesterday and the Yasha came out, but someone later closed it up again ...

Any ideas what is going on, I am guessing a molt?

That would be my first guess. My pair does it too.

I find he moves his doors on a regular basis. The yasha disapears for a day or 2 then shows up again. I don't think the yasha is at risk of being trapped.
Is it possible there is another opening in another spot you can not see?

yup mine does it too, its just what they do. I think its to keep us guessing!:biggrin:

Mine has two different entrances if one is closed the other is open.

i had a yellow watchman it was gone for a month and after a month it came out