liz2
Fish Aficionado
They dont usually go pale unless they are feeling poorly or going that way I think that is what people are asking about. 


by the look of your updated pics it looks like hes built a bubble nest which is a good sign, is he feeding ok and has he lost some of his character as well?he could be constipated, try boiling a pea and mash it up to feed him this will clear him out if this is the problem