Nothing. A goldfish is a goldfish, not a gold fish.
It's a natural coloration.
silver
IF you mean literally a goldfish, no. Just no. Otherwise provide information on what you mean by a "goldfish".
probably- cheese
No, not really. A goldfish is a fish we all have had at least once as a kid. A silver fish is one of thoughts stupid bugs that crawl in your house that we have all been freaked out by as a kid.
There are so very many grey/silver fish that are similar to goldfish. It is probable however that you are refering to a goldfish that has not coloured up. Goldfish are all silver as youngsters and only develop their colouring as they grow older. Some stay grey/silver and never develop colours.
Orange/silver She is a technically a goldfish, but looks orange.
Goldfish come in many different colours. They can be orange, like you normally think of, white, black, blue,silver or any combination.
its your pet
If you mean will a goldfish eat its own fry or eggs then the answer is yes.
Goldfish do not have hair; instead, they have scales that cover their bodies which can vary in type and colour depending on which type of goldfish you have.
A fantail goldfish can be any of the goldfish colours which can include any or all of the following white, gold, silver, copper, blue, orange etc etc.
it seems they are brown but they are atchally silver and shimmery in the light so if it does turn silver try turning the light off for a while