Had my tank going for over a month now, taking it slow. But it seems like my Diamond goby id eating or picking at constanty at my GSP, he has left all my zoa frags and mushrooms alone. I was curious if this is normal or if he just isnt a fit ?

Thanks a lot for the help

Most likely its going after something on the GSP or the GSP is initiating a feeding response in the Goby. It is most likely a trait of the fish. Decide what is more important to you. The GSP or the Goby then based on the decision move one.

Ok thanks alot for the help

Diamond gobies generally eat food that they naturally get while cleaning the sand bed. They need an a 40 gallon tank with a fair amount of sand be size to survive properly, I'm guessing that your tank has neither 40 gallons nor a ton of sand. They'll also take prepared and frozen foods, but again they aren't nano fish.