goldfish need to lay eggs. Because if they don't no goldfish would be alive and would not be any more so they would become gone forever.
Goldfish do lay eggs. The eggs will attach to something in the tank or bowl until they hatch.
Not nessaserily. But sometimes it does help.
Goldfish need to mature before they can lay eggs and they can get pretty large (6" or more). By the time they are large enough, they have outgrown a fish bowl. So technically, the answer is no. You will need large goldfish in a large tank before you can breed them.
when you get it a mate.
Yes. Laying eggs is how they reproduce.
Goldfish are egg layers
Yes.
Yes.
yes
yes they can!
Fish lay eggs.
Of course! Goldfish reproduce sexually not asexually