what kind of fading? Some times my fish will fade when stressed out, (like sometimes during a water change) but then darken up right after.
My ornate lost some of his green coloring around his mouth, it was a slow progression when the color was fading, and it is now slowing coming back. When I originally had gotten him it was no where near as viabrant as it became after keeping for a bit. I'm not sure what caused it but I have added more plants and vitamins/ water supplements/ salt and it seems to be helping. This fading out and coloring up has gone on over the course of a couple of months.