I just noticed some new Very small Black dots on the left side of my blue diamond Is it debri/dirt or is there a black spot skin problem or somthing?
Sounds like a pigment issue, with Koi we call this a shimmy..not sure what it is called with discus...pepper?
it is called peppering, but not common in the blue strains. I have only heard of black spot as a disease in marine fish
I have that on my pair also, female has 2 and male only one. They are about 2mm wide and round.
Here is not so quality picture - I shot it for egg counting purpose:Dots.JPG
Like Eddie says some older BD will develop some black spots . I have encountered that with some of mine.
Roberto.