Ixa Cylindrus

[Bavis Bucatini]

Recently put this little Handlebar Crab/ Apple crab? aka Ixa Cylindrus in my tank.

Cannot find him anywhere and couldn't imagine him being eaten last night with the creatures in the tank I have!

I presume it may have burrowed itself but unsure as the shop did not have much experience with this guy.

Anyone have one of these and know its behavior?

 

[Bavis Bucatini]

UPDATE: Found! he was in the back corner, it looked like he could have been stuck but I didn't wanna take chance so I gently moved him!