Snapping shrimp in tank already...add goby?

[captmilkchoco]

Picked up a rock of coral from a fellow reefer, apparently got a small snapping shrimp too. Only got a very quick look at it, but I hear the snapping every now and then, as well as some flying sand under a couple rocks.

Can I add a yellow watchman goby? Not necessarily for the pairing, but just general safety.

Any other fish I should avoid putting in there?

PS Oceanic BioCube 29