The huge puss-spot is probably a tumor, this is found quite commonly in older goldfish.
Actually, goldfish don't have a specific gender. They are born as females, but as they grow, they turn into males.
It is quite possible that the black spot is part of the fishes colouration. Goldfish often have many different colours in many different shapes and shades anywhere on their bodies or fins.
no
who knows. maybe it's sick.
I believe it is Jupiter and Neptune. The Jupiter spot is huge and is known as the Great Red Spot.
No. Fordyce's spot can often contain a zit like puss
A male goldfish developes white spots when he is about to fertilize the females eggs. It could be possible that you have a male and a female! Congrats!!!
No. Babies have a "soft spot" on their head but it eventually closes.
I am unaware of "Black Spot" being a disease of fish. So I would say no.
Yes, you will see a white spot on its gills when it is ready to.
Simply a marking on the fish. Do not worry about normal marks.
the great red spot