Im new to the hobby

, and I just got a new firefish goby on sunday. I took my time acclimating him, and made sure all the parameters were right. So, I know have a pair of clowns, my clean up crew, a peppermint shrimp and this firefish. The system is going great, execpt for the fact that the firefish hasnt come out of the rocks yet. I know they like to hide, but will they come out to eat? Or are they just super shy at first before theyre used to their surroundings?