no i dont. he actually is still under the rock whee my clowns sleep. they dont seem to mind. i wonder if he is dead... hes only like an inch and a half big. but when i moved the rock origionally he bit me!
Some generic info:
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My LFS calls them Yellow Rose Gobies. They have one in a 12g nano and more than half of the time I cannot find the bugger. Matter of fact yesterday he almost took the tank apart trying to find him and couldn't. I think they are quite shy.
I would be patient and observe his/her behavior. They will burrow and most of the time just hang out in the burrow.
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A bit more info with the important thing...
When first added to the aquarium it may not eat for several days, but will usually acclimate and begin eating.