How Long Can a Goldfish Live? Everything You Need To Know




How Long Can Goldfish Live

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Did you just buy a goldfish? Or are you thinking about adding one to your home aquarium? Congratulations! Goldfish make great pets. They’re beautiful, peaceful, and relatively easy to care for.

So how long can a goldfish live, on average? The answer isn’t as simple as you might think. It depends on several factors, from the type of goldfish to the quality of water they’re living in.

In general, goldfish have a lifespan of 10 to 15 years. However, some goldfish have been known to live for 20 years or more.

In this article, I’ll share everything you need to know about goldfish lifespan and how to care for your goldfish, so they live a long life.

What Is the Life Expectancy of the Goldfish Species?

The lifespan of goldfish is 10 to 15 years on average. However, some goldfish have been known to live for 20 years or more. There are even reports of slim-bodied goldfish living in outdoor ponds for more than 40 years!

In contrast, fancy goldfish have a shorter lifespan of only 7-12 years. This is because they are much more delicate than slimmer varieties of goldfish. Additionally, their organs being packed into a small body causes their biological processes to be easily disrupted.

Overall, the most affecting factor in how long goldfish live is the conditions of their environment. For instance, poor water quality may result in health issues which may cause premature death.

Here’s a table that shows the average lifespan of goldfish in various living conditions:

ConditionsExpected lifespan
Goldfish bowlLess than 2 months
Small tank with poor care2 to 6 months
Small goldfish tanks with good care6 months to 2 years
Reasonable size tank with poor care6 months to 2 years
Reasonable size tank with good care2 to 5 years
A large tank with poor care2 to 5 years
A large tank with good care4 to 8 years
A large tank with excellent care6 to 10 years
Large tank, excellent care, and good genes10 years +

What Is the Lifespan of the Different Varieties of Goldfish?

Not all goldfish are created equal. In addition to the different shapes and sizes of goldfish, there are several different varieties. And each variety has its own lifespan.

Here’s a quick overview of some of the types of goldfish and how long they live on average:

Goldfish NameGoldfish TypeAverage Lifespan (Tank)Average Lifespan (Pond)
Common GoldfishSlim-bodied12 – 20 years20 years or more
Comet GoldfishSlim-bodied10 – 12 years15 – 20 years
Oranda GoldfishFancy Goldfish10 – 12 years10 – 15 years
Fantail GoldfishFancy Goldfish10 – 12 years10 – 15 years
Shubunkin GoldfishFancy Goldfish12 years14 or 15 years

How To Prolong My Goldfish’s Life?

Maintain Good Water Quality

How long would you expect yourself to live in a polluted environment? Probably not very long. The same goes for goldfish.

To maintain good water quality, you should stick to a regular maintenance schedule. This means changing 25-50% of the water weekly and vacuuming the gravel to remove any waste buildup.

For algae control, you should remove it with an algae scraper or use an algae-eating fish species. However, be careful not to scratch the tank glass in the process.

Also, you should test the water regularly for ammonia, nitrites, and nitrates. If these levels are too high, they can cause fish poisoning.

When it comes to the filtration system, make sure you choose one with mechanical and biological filtration. This will help remove toxins and debris from the water while providing a place for beneficial bacteria to grow.

And finally, don’t forget to add de-chlorinator to the water before you add your goldfish. Chlorine is poisonous to fish and can quickly kill them if the levels are too high. Ensure the tank’s chlorine level is within the acceptable range.

Provide Them With a Healthy Diet

Just like humans, goldfish need a well-rounded diet to stay healthy and live long lives. In their natural habitat, goldfish eat a variety of small insects, crustaceans, and plants.

In captivity, you should provide them with a diet replicating their natural diet as much as possible. Some of the best foods for goldfish include:

  • Pellets
  • Flakes
  • Live food (brine shrimp, daphnia, bloodworms, earthworms, and mosquito larvae)
  • Vegetables (spinach, peas, zucchini, broccoli)
  • Aquatic plants (duckweed and elodea)

When it comes to feeding frequency, you should feed them 2-3 times a day. But only give them as much food as they can eat in 2 minutes. Any uneaten food will sink to the bottom of the tank and pollute the water.

Additionally, you should never feed them more than the stated amount on the food packaging. Overfeeding is one of the most common mistakes goldfish owners make, and it can quickly lead to health problems such as swim bladder disease.

Maintain Proper pH Level & Water Temperature

There is nothing more stressful to goldfish than sudden changes in pH level and water temperature. Even a slight change can cause them to go into shock, which can lead to death.

Ideally, you should maintain a pH level between 7-8, and the water temperature should be between 65-72 °F for fancy goldfish and 60° to 72°F for common goldfish.

To ensure the pH level doesn’t fluctuate, you should test it regularly and only make small adjustments when necessary. For example, if the pH level is too low, you can use a pH-up product to raise it slowly, such as Seachem Neutral Regulator.

Seachem Neutral Regulator
  • Adjusts pH to neutral
  • Removes Chlorine, Chloramine
  • Detoxifies ammonia
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As for the water temperature, you should use a thermometer to monitor it and make sure it stays within the ideal range. If the water gets too cold, you can use a heater to raise the temperature gradually.

Provide Them With the Proper Tank Size

Film, TV, and children’s books often depict goldfish in small bowls or fishbowls. But the truth is, this is one of the worst things you can do for your goldfish.

Goldfish need a lot of space to swim and thrive. In fact, a single goldfish need at least 20 gallons. But if you want to keep more than one fish, you need to add an additional 10 gallons for each fish.

So, if you want to keep a pair of goldfish, you need at least a 30-gallon tank. For three fish, you need a 40-gallon tank, and so on.

Otherwise, your goldfish growth will be stunted, their immune system will be weakened, and they will be more susceptible to diseases. Not to mention, they will have a shorter lifespan. You don’t want that for your beloved goldfish, do you?

Give Them Additional Oxygen and Aeration

Oxygen is essential to all forms of life, including goldfish. In the wild, they get oxygen from the water moving over their gills. But in captivity, this isn’t always possible, which is why you need to provide additional aeration.

One of the best ways to do this is to use an air pump and stone. The air pump will push air through the stone and into the water, which will help oxygenate it.

Also, you can use a bubbler, a device that produces tiny bubbles. These bubbles will help oxygenate the water and provide your goldfish with something to play with.

Plus, you can add aquatic plants to your tank. Aside from oxygenating the water, they will also help remove toxins and improve water quality.

Place Them in an Outdoor Pond

Goldfish are native to freshwater streams and ponds in the wild. Seasonal variations, adequate natural light, and naturally available sources of many foods (e.g., plants, insects, larvae) make an outside pond the finest environment for a goldfish to live longer.

However, don’t put expensive goldfish like Pearlscales in a pond since they are unlikely to survive. On the other hand, if you have long, thin-bodied goldfish, such as common goldfish, Comets, and Shubunkins, they will do quite well in a pond.

To create a suitable pond for your goldfish, you should adjust their diet and supplement it with aquatic plants. Also, you should regularly test the pH level and water temperature to ensure they are within the ideal range.

And last but not least, you need to clean the pond regularly to remove debris and keep the water quality high. You should do a partial water change every 2 weeks for best results.

Keep Them Away From the Predators

Goldfish are still susceptible to predators even when kept in backyards. Adult goldfish are most at risk from herons, cats, birds, and raccoons. Also, frogs and salamanders may pose a hazard.

Although high, tight fences can sometimes help keep animals out, it is not always effective. The best way to protect your pet goldfish is by using leaf nets or another type of coverage that fits snugly.

Another way to scare predators away is motion-sensitive sprinkler systems. Further, you can build man-made fish shelters where your fish can go and hide when they feel threatened.

How Long Can Goldfish Live

Maintain Appropriate Bacteria Levels

Yes, you read that right. Bacteria are actually essential for the health of your goldfish and their environment. In fact, they help to break down fish waste and uneaten food, which helps to keep the water clean.

To help beneficial bacteria grow, you should cycle your tank before adding any fish. This process can take anywhere from 4 to 8 weeks. To do it, you must add gravel from an established tank or a bacteria starter culture.

After that, you must regularly test the water conditions and add ammonia as needed. Once the ammonia levels drop and the nitrate levels rise, your tank is ready for goldfish.


What Is the Impact of Water Volume on a Goldfish’s Lifespan?

Water volume has a direct impact on how long goldfish live. A larger water volume provides more space for the fish to swim around and helps dilute toxins and keep the water clean.

Thus, goldfish in large tanks or ponds tend to live longer than those in small tanks.

What Is the Lifespan of a Goldfish Living in a Bag?

If you have a goldfish, do not keep it in an air-filled plastic bag for more than nine hours. If the bag has holes for the fish to breathe, it can stay safely there for up to two days.

How Long Can Goldfish Survive in a Bowl?

Goldfish can survive in a bowl for 1-2 years, provided the water is clean and there is enough oxygen.

What Is the Lifespan of a Goldfish Living in a Pond?

Goldfish kept in ponds tend to live longer than those kept in tanks. In fact, some goldfish have been known to live for over 20 years in ponds with proper care.

What Is the Life Expectancy of a Goldfish Without Food?

Goldfish can live for around two weeks without food. However, they will start to experience health problems after that.

How Long Can Goldfish Survive Without Being in Water?

Goldfish can survive out of water for ONE hour! However, they will start to experience health problems after that.

Why Do Goldfish Die So Quickly?

There are several reasons why goldfish die so quickly. One of the most common reasons is that they are not given enough space to swim around.

Another reason is that they are not given the right diet. Goldfish need a high-quality diet that contains all the necessary nutrients.

Finally, goldfish can die quickly if not kept in clean water and at the right temperature.

How Large Can Goldfish Grow?

Depending on the type, goldfish grown in captivity can reach different lengths. For example, slimmer-bodied goldfish have been known to grow up to 10 inches, while fancier breeds typically only grow to be 6-8 inches long.

In contrast, goldfish living in the wild have been observed growing up to 12-14 inches. A man from the Netherlands owned the largest recorded golden fish, measuring an impressive 18.7 inches in length!

What Are the Goldfish That Live the Longest?

The species of goldfish that live the longest are common goldfish, Shubunkins, and Comets. While these fish require much more tank space than fancy goldfish, they have been known to have lifespans exceeding 10 years.

What Is the Age of the Oldest Goldfish?

A fish named Tish was born in 1956 and passed away at 43 years old, setting the Guinness World Record as the longest-living goldfish.

In contrast, her sibling Tosh only lived to be 19 years old. This goes to show that by simply providing a good environment, you can make a world of difference to your pet’s lifespan.

Last Words

Now that you know how long goldfish live, you can take the necessary steps to ensure that your fish has a long and healthy life. Just remember to give your goldfish plenty of space to swim around, provide a high-quality diet, and keep the water clean and at the right temperature.

With proper care, your goldfish will swim around for years! Thanks for reading!

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