A few of my fish have had this for a while now. Sometimes I will see what looks like scales on the bottom of the QT tank, not sure they are scales though. I can't always see it, it depends on the angle and lighting as can be seen in the last picture. Although you can see the missing of the blue color right where this is at. I have used Prazi-Pro with no effect.


It did take me like 20 some shots to get a few good ones though. I used my Nikon D90 with Tokina macro lens. Still learning with it and sometimes I just get lucky!

