The answer is no. People usually think that goldfish get lonely and depressed. This is not true. Goldfish are fine on their own! People usually prefer 2 or more
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.
They prefer one.
Yes, like all pet fish, goldfish need more oxygen than can be provided by just a bowl of water.
No they should not, goldfish like higher vegetable protein levels, where as guppies need more animal protein.Yes.
That you need a new goldfish
It depends on the goldfish.. For ones that stay small you should have at least 10 gallons.. The bigger the goldfish gets the more water it needs. Those one and two gallon bowls do not cut it..
Goldfish have scales rather than hair, and as such, they do not shed
They definitely need a air pump, a filter, at least 20 gallons of water for one goldfish, a thermometer, and decorations to improve the goldfish's well-being/mood.
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.
Goldfish cannot live in bowls. Fancy goldfish need at least 20 gallons for the first fish, and 10 gallons minimum for any additional goldfish. This means that for two goldfish, the smallest tank you should have is 30 gallons.
One goldfish requires at minimum a 20 gallon aquarium with a filter, and an air stone would be nice