Clownfish Lifespan – How Long do Clownfish Live?

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While all fish will display different lifespans depending on whether they live in the wild or in captivity, the clownfish is slightly different.

This fish’s lifespan is all over the place, heavily influenced by a variety of factors.

These include the existence of natural predators, food availability, food competition, water quality, the impact of various diseases, etc.

All these factors are present in wild and in captivity settings.

Fortunately, you have a lot to say about influencing your clownfish’s lifespan, so let’s discuss that in more detail.

How Long do Clownfish Live in The Ocean?

Clownfish live up to 10 years in captivity if they’re lucky. However, the average lifespan sits between 6 and 7 years for most clownfish.

The main reason for that is natural predation. Clownfish have a variety of natural predators in the wild, barracudas, and sharks being the most notable ones.

This causes many clownfish to barely live a couple of years before turning into another animal’s meat.

Environmental competition is another factor worthy of mentioning. Clownfish will compete with each other over space and food and other aquatic animals as well.

Such a competitive environment will quickly degenerate into violence which can have deadly consequences.

The situation is a bit different for clownfish living in captivity.

How Long do Clownfish Live in Captivity?

Most aquarists report that their clownfish display a lifespan of 6 to 10 years in captivity. This is similar to wild clownfish, except the reasons differ.

Before detailing those reasons, it’s worth noting that some aquarists have claimed that their clownfish have reached the venerable age of 20 to 30 years in some cases.

While it is possible for a clownfish to reach such an age, don’t get your hopes too high. It’s rare to see clownfish exceeding the 10-year mark and even rarer to have them near the 30-year one.

With that said, here are the primary issues that can impact your clownfish’s lifespan in captivity:

  • Constant fish stress – Keeping your fish in a smaller-than-necessary tank, overcrowding them, or ignoring the water quality will stress the clownfish. Your fish will inform you of its discomfort via a multitude of signs. These include lethargy, hiding behavior, lack of appetite, increased aggression, etc. When that happens, you should seek to remediate the situation fast so that your clownfish don’t face harsher consequences. Prolonged fish stress can actually kill.
  • Improper diet – As omnivorous fish, clownfish will consume a variety of foods. The ideal healthy diet should consist of both animal protein and plant-based vitamins and minerals. Make sure your clownfish has a balanced and nutritious diet comprising of several food sources. Brine shrimp, bloodworms, white fish meat, seafood, spirulina, and even home-grown veggies. Inform yourself of the proper vitamins and minerals that your clownfish require in their diet to make sure you’re not skipping anything.
  • Feeding schedule – An improper feeding schedule will either cause your fish to starve, increase their aggression, or overfeed them, which comes with different problems. You shouldn’t feed your clownfish more than 2-3 times per day at most and only what they can eat fast, within a couple of minutes. Clownfish should also have 2-3 protein-rich treats per week to support their need for animal protein. Clownfish fry require more frequent feeding in the neighborhood of 3-4 times per day.
  • Inadequate water changes – Using chlorine-rich tap water during a water change will kill your fish. Not minding the water’s temperature may also send your clownfish into temperature shock. Last but not least, clownfish are saltwater creatures. Mixing freshwater with their tank’s saltwater during a partial water change can have dire consequences. Clownfish won’t survive in freshwater for more than several minutes. Always check the water’s salinity level before, during, and after a partial water change. The ideal salinity level should remain between 1.020 and 1.024.

We should also mention the impact of various diseases, parasites, or bacterial infections, which are common in poorly maintained aquatic settings.

Keep your clownfish’s habitat clean, fresh, and healthy, and they will live long and prosperous lives.

How to Make Clownfish Live Longer?

As you’ve seen, there are several ways by which you can impact your clownfish’s lifespan negatively. Now, let’s see if you can bring about a positive impact.

The answer is yes, and it consists of multiple strategies that boil down to 3 overarching principles:

  • A stable environment – Water quality should remain as stable as possible over the years. This refers to parameters like temperature, lighting, nitrates, salinity, and overall cleanliness. I suggest performing at least 1 weekly partial water change and cleaning your clownfish’s tank every 3-4 weeks. The goal is to eliminate algae overgrowth, remove excess fish waste, and vacuum food particles that may clog the filter and muddy the tank’s water.
  • Ensure optimal nutrition and a stable feeding schedule – Clownfish require a varied diet, comprising all the vital nutrients necessary to boost their growth, keep them healthy, and highlight their natural colors. Provide your clownfish with a nutritious and optimized diet, supplement their meals with vitamins and minerals if necessary, and stick to a consistent feeding schedule. You don’t want your clownfish to starve, but you shouldn’t overfeed them either.
  • Mind the salinity level – We have already mentioned this aspect, but it’s worth restating it. Clownfish require a level of water salinity between 1.020 to 1.024. The more the salinity levels change, the worse it will be for your clownfish. This tends to happen more often during water changes when novice aquarists either forget or ignore the fact that adding freshwater to a saltwater tank will drop the water’s salinity. This can cause the clownfish to experience osmotic shock, depending on how severe the changes are. Invest in a salinity meter and always aim to preserve your clownfish water’s salt levels.

Aside from these 3 overarching strategies, you should also:

  • Provide your fish with peaceful and friendly tank mates
  • Take measures to prevent aggression, even if it means removing the aggressor from the tank
  • Treat any sign of disease immediately and quarantine the fish to protect the healthy clownfish population

How Old is the Oldest Clownfish?

There isn’t definitive data on this matter so that we can draw a clear-cut answer. As a general idea, it’s been reported that some clownfish have exceeded 20 years of age.

There are even reports of some clownfish surpassing 30 years, but I would take these with a grain of salt. The same as you should do with any anecdotical reports.

How Long Can Clownfish Live Without Food?

Clownfish can live for several days to 2 weeks without food. But don’t take this ability of theirs for granted.

This is an emergency biological behavior that allows clownfish to use their fat reserves to nourish themselves when food is absent.

It shouldn’t be abused since clownfish will begin to experience health problems when lacking a stable feeding schedule.

It’s also worth noting that only healthy clownfish can withstand more than a week without food. If the fish has a compromised immune system or is sick or old, it might not make it that far.

So, always feed your clownfish adequately to keep them healthy over the years. If you need to leave home for several days, have someone feed them once or twice per day until you return.


Expect your clownfish to live between 3 to 6 years in captivity, provided you do everything right.

To summarize:

  • Provide your clownfish with enough space to prevent overcrowding and minimize the risk and impact of territorial behavior
  • Ensure a nutritious diet, paired with a stable feeding schedule
  • Don’t pair clownfish with aggressive, too large, or territorial fish species
  • Clean their tank regularly
  • Mind the stability of their water parameters, especially salinity

Other than that, clownfish are pretty easy to care for, which is why they’re some of the best choices for novice aquarists.

Author Image Fabian
I’m Fabian, aquarium fish breeder and founder of this website. I’ve been keeping fish, since I was a kid. On this blog, I share a lot of information about the aquarium hobby and various fish species that I like. Please leave a comment if you have any question.

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