Death in the Family

Well my diamond goby that I have had for about a year died today. Looks like it starved itself too death. It stinks when you lose a fish that you've had for a while. Question is what are some of the best gobies to keep with a tank that has 3 Tangs, Clowns, Sailfin Blenny and Royal Gamma?
 
Thats exactly what happened. He ate everything from brine to krill and anything in between yet got skinner each month. I want another type of sand sifting goby but don't want to lose one like this...
 
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