Gold Fish

[diamondz]

I have 3 fish I goldfish and 2 fanfin Gold fish....
Two months ago I fan fish started to turn black slowly with in a month it was totally black then the other one started to turn as well they eat fine and swimm well???

But the last two weeks there almost all golden again ??????
Anyone know why this might of happened???
Nothing has changed in what the eat or light or water so WHY????

[B00]

Perfectly normal for them to change colour, nothing to worry about :-)

[wildwood]

Yep, all gold coloured goldfish start off life a bronzy colour. Just before they turn golden they go black. It has something to do with those thingamejigs they grow on the scales that will reflect the light to give a golden colour.