how come my diamond goby look like it keeps on taking a deep breath. he is doing it in the fish store before i got him, and he is doing it in my tank. doesnt seem to be killing him, but a big ? why he does it.
Does it look kind of like he's yawning, or strectching his huge jaws? All of mine have done that. So have some basslets of mine too. I think they're just strecthing but I can't be certain.
