snapple fact

[Mizuro Ami]

i read on a snapple cap that if left in the dark, a goldfish will eventually turn white.

haha i thought it was really interesting.. does anyone know why?!

 

[SirMinion]

I know this to be true.
I used to keep a couple of fairground goldfish in a tank when I was a kid, the lightbulb failed and didn't get around to replacing it for months.
When I did replace it, both fish had become silvery-white.

Hugely simplified, pigmentation is a side effect of vitamin production in the skin stimulated by light.

This is is also the reason why humans tan.

 

[Jen]

Cool! You learn something new everyday!

 

[Ethos]

That is pretty cool! Does it work on any other fish?