I noticed a single spot on my naso and a single spot on my trigger. My trigger has had spots like this before but they haven't multiplied and I assumed they were from the rocks/sand he hides in. The naso is a different concern since they both have one. These were not present yesterday, fish are acting normal and nothing has been added to the tank since 12/12. All fish have been through proper ttm.
Pics below
I have a couple of tangs, so I'm wondering if these are from squabbles

Pics below
I have a couple of tangs, so I'm wondering if these are from squabbles



