my yellow watchman goby has a fleshy white bottom lip. He has a tiny red spot in the middle of the fleshy part. He eats very very well and has a nice little home he's made for himself. He's been in the tank for 10 days or so.
Is this something I should be concerned about? keep an eye on it?
I had a Foxface and currently have a Tang with that, assuming it's the same thing. Do you have a picture? I don't want to dismiss it but if it's what I think it is then I wouldn't worry about. Does it almost look like it's worn?