Goby and firesfish together??

[cvrle1]

Hey,

I have a firefish for few weeks now and it found it self a burrow in which it sleeps and hides sometimes. Burrow is just a hole in one of the rocks and it's big enough for the whole fish to hide in and not be visible to me. Yesterday I bought an orange spotted goby and it seems that goby found the same burrow and is hiding there. Currently both fish are inside, so just wanted to see if this could be a problem. It seems like they might have had a fight (goby is missing a small piece of it's tail) although I am not sure if it was a firefish work or not. Firefish is hiding inside the burrow right now and goby went for a walk and now is back inside again. There are plenty of other hiding places, but neither of them want to leave.

Should I be worried that both fishes claimed same territory or could they both live in the same spot?

Thanks for the help