This is going to depend on if the black spot was part of it's colouring when you first got your fish, or if it appeared at some point while in your tank, and went away at some point after you did a water change.
If it's the second part, then that would be an ammonia burn which is caused by poor water quality in the tank.
it will live
"Goldfish" colors range from white to yellow-orange to blue to black. White goldfish have no pigment cells.
IF you mean literally a goldfish, no. Just no. Otherwise provide information on what you mean by a "goldfish".
If you mean a black moor, or a goldfish that has always been generally black in colour, then it will depend on what is wrong with it.If the goldfish was a different colour & recently started getting black patches on it, it's quite possible that these are ammonia burns that are healing.To avoid this from happening again, you need to make sure that you do regular water changes in your tank to keep the ammonia down to zero
Nothing. A goldfish is a goldfish, not a gold fish.
The fish is rather sick. Or It is just changing a little bit of color. My fish did the same thing.
not agree, get away
its flying away for the winter
Your hamster goes bald and grows a black spot on its back because it is about to die.
its your pet
hes a mean black person who cant stick to himself GO AWAY
A black circle means What goes around comes around. (KARMA)