Is this a disease?

[Volcano]

So I have five white clouds, the first fish is what they used to look like, and the second is what four of them look like now. I recently converted my 10 gal to a 20 gal. You can see on the first fish that he's starting to look like the second. What is this? I noticed that my zebra danios had this years ago for quite a while, before someone pointed this out on these fish I didn't think to ask...which one is 'normal'? (sorry couldn't get a super good pic)

edit-I recently popped some pond snails in for the assassin snails to eat/bc I wanted to get rid of them+2 more pics (fish is getting darker)

Edited March 11, 2021 by Volcano

[Colu]

What are your water parameters pH nitirtes and nitrate and ammonia GH kH and what temp is your tank 

[CorydorasEthan]

@Volcano I do not know of any diseases that cause these symptoms on a fish. Is the fish acting normal? If so, then I would assume it's fine, and it is just changing color. I have seen in some videos hybrids between a golden white cloud and a normal white cloud kind of look like this, so maybe it is a hybrid. If not, I would just wait for more members of the forum to join in and provide more advice. Hope this helps.

[Biotope Biologist]

Nope no disease here. Your fish just gained pigmentation. Could be because of your food. Fish respond especially to carotene, krill, spirulina, and spinach. Could also just be the fish maturing. 

 

'Gold' and 'Albino/Leucistic' are not synonymous 

[WhitecloudDynasty]

Its completely normal, with age they could change..if you want him to get lighter again I recommend a white/lighter bottom