My watchman goby has this spot on him that I thought was just from brushing up on the rock but it keeps getting worse. I have a cleaner shrimp in my tank that I think may be making it worse, so I have the goby in a quarantine tank. any ideas what it could be or what I can do to help him??
this was about 2 weeks ago
this is him now
this was about 2 weeks ago
this is him now
