Sleeper goby

[Kial]

anyone have any experience with sleeper gobies? Just had an impulse buy at the lfs so didn’t really know much about them other than they seem to keep your sand sifted and clean. Although could be a pain dropping sand around but was willing to give it a shot.
After adding him to the tank I have no idea where he swam off to. Do these fish burrow under rocks?

 

[Ludders]

yes they do, he should make an appearance soon and feed.

 

[Kial]

Found him. He has already made his burrow under the rocks.