Do you have a shrimp to go with your goby? Nope, just the goby.
What kind of fish is the blue one that you have? It is a pygmy or cherub angel.
Do you run a big cuc because I didn't see any snails or anything like that in your tank? I have about 3 or 4 nassarius snails and a couple hermits
How much rock do you have in your tank and is it all live rock? I started with about 30 lbs of base rock (lace rock) and 10 lbs of live cured rock.
Sorry for all of the questions I'm just wanting to set my tank up right the first time. No problem, I will answer all the questions you have.