I have a YWG paired with a pistol shrimp in my 15G Nano. He and the pistol live under the rock on the left side of my tank and they do a lot of work with the sand (primarly the pistol - it used its big claw like a scoop and is quite amazing to watch). He's very peaceful but my girlfriend thinks he's a wuss as he retreats in a flash every time he sees someone move. He loves my feeding stick, though and is almost instantly out when I put it down there. Haven't tried putting him on pellets as he's still my only fish and I spoil him.
I have a 2-3" sandbed which they seem happy with.
Felix is the srhimp and I named the Goby Oscar.
HTH!
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