Sick Fish (pt2) with Picture

[63valiantragtop]

Tang3.jpgHi all,

This is a continuation from my Sick Fish post part 1...

All my water parameters are in the first thread and I thanks all for the great advice that was given.

I just wanted to show a pic of my Naso Tang and see if anyone had any other Ideas.

Is it possible this is a disease and not just poor water quality from a slightly high amonia?

As said before this fish was very healthy and active and he always ate well (and he still does eat), but he just lost color and has this black patchy looking spots and he sits on the bottom of the tank.

If you haven't seen the other post...my other fish are also sick and I have lost 3 fish in the last few days...

Any input is appreciated.

Thanks...

JASON