The lifespan of fantail goldfish can be expected to be about 10-25 years. Unfortunately, few fish actually make it past the three year mark because of their owner's inexperience. Here is a list of things you can do to improve your fish's chances of living a very long and happy life: buy an aquarium of at least 30 gallons (more preferably), feed them a high-quality fish food and give them plenty of variety in foodstuffs, do weekly 50% water changes, and observe your fish each day for about 15 minutes to look for any signs of illness.
Since goldfish are cold blooded they do not need to waste energy trying to keep their body temperature constant therefore they don't need to eat as much and can go longer without food than warm blooded animals. A fantail goldfish can last about 7-8 days without food before they begin to starve.
Fantail goldfish are rather small when it comes to goldfish. As adults they only measure about 4-6 inches, unlike the fancy Orandas that grow well over 10 inches. However, being on the smaller side makes them easier to care for and they are not to mention one of the hardier varieties of goldfish.
Possibly over 25 years, it all really just depends on how well you take care of it and its own genetics.
Over 20 years if they're taking care of properly
They can live anywhere from 2 days to 20 or 25 years. It all depends on how the water is kept and how happy it is.
Fantail goldfish are a hardy breed, strong swimmers and they compete well for food with the ryukin, shubunkin, comet or common goldfish; making these goldfish breeds good tank mates for your fantail goldfish.
yes
If the seasons right... usually a couple of weeks.
Female Fantail goldfish can not get pregnant they lay/scatter eggs when they are chased by males . So you have nothing to worry about.
Goldfish are peacefull fish and do not normally fight with one another.
it has a short tail
Yes, but slowly.
A fantail goldfish can be any of the goldfish colours which can include any or all of the following white, gold, silver, copper, blue, orange etc etc.
The biggest goldfish that are on record are primarily single tailed fish due to the fact that they grow quite long rather than in girth compared to a fancy goldfish such as a fantail.
Survival of the fittest
They are both goldfish and so can breed with one another if they are of different sexes.
suma nimo