They may just be a bit stressed out is all, are the ones rubbing up against the rock being beat on alot maybe? give it some time before you put meds up, but you could try doing a water change and upping the temp a few degrees.
You said they where new, how new..if you are talking about you JUST put them in the tank then it maybe that the comditions of your water..PH etc are diffrent significantly from what the place you got them from had. This can cause stress and rubbing on rocks is a sign of that. give it some time and see what happens.
but yeah if ich appears treat it
You said they where new, how new..if you are talking about you JUST put them in the tank then it maybe that the comditions of your water..PH etc are diffrent significantly from what the place you got them from had. This can cause stress and rubbing on rocks is a sign of that. give it some time and see what happens.
but yeah if ich appears treat it