Sharknose Goby Concern

[thebkramer]

Hi and thanks for any responses.
I have a 55g tank with LR corals, sm CUC, 2 blue green chromis and starry blenny. I just bought a sharknose goby today. Would he be better with a
2nd sharknose or does it not matter?? Do they do better as pairs?

 

[small alien]

from what I've ready, two males will fight. And it's difficult to sex them. It's a crap shoot.