help with spotted goby

All of a sudden my goby is looking all sunkin in on his sides and looks a little crooked. As if he is underfed. Has not been cleaning the sand very well lately. Any thoughts or any one:-/ know of anything I can do?

 

I'm sorry. It's a diamond spotted goby.

 

How long have you had it? How old is the tank?

 

the tank is almost 2 years old and I've had the goby about a year

 

hummm, So you should be more then well established with food for the little guy? Are your parameters all in check? If it were me I would dose Vitamin C and maybe soak food in Kent Marine Zoe for vitamin nutrition.. But I've only been doing this about a year so my knowelage may not be at the levels of some others on here.. Just thought I'd offer my two cents.

 

The only thing working in the sand is nassarius snails. I have cut back food for the tank in general, trying to help the nitrates and algae. Could it be a problem for him? I thought most of his food comes from the sand. But I do also feed him mysis shrimp and formula one. Sometimes silversides. I 've been watching my perams pretty close lately. They seem to be okay. He seems to be getting worse today. I really do appreciate your suggestions.