Provided you do your job and equalise the water parameters properly there should be no problems and the fish should settle in quite rapidly. I would expect a new goldfish to settle down and eat in the morning after an overnight settling in period.
Don't take a goldfish out of water.
43.2 seconds
8 to 9 days
2-3 months
Goldfish are carp. Carp can live to 100 years.
When ever you don't feed him or her.
well it takes about 5 days
Depending on the size of the goldfish right now, it may take as little as 1 year to as long as 3 years for it to reach adult size.
you have to get it a mate to satisfy its sexual needs.
They will live to be happy and healthy fish just as long as you take care of them.
Goldfish can live a very long time provided that you take proper care of them.One goldfish needs a 20 gallon aquarium with a filter on it's own, and then it's another 10 gallons for every additional goldfish you want to add (so 3 goldfish means at minimum a 40 gallon aquarium).Along with regular weekly maintenance that includes changing at least 50% of the water, goldfish can live for a very long time.
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.