Life in Bubbles: The Real Age of Clownfish

If you are wondering how long do clownfish live, there are a couple of factors that go into it. From genetic factors to environmental ones, there are a few aspects that determine the lifespan of  clownfish. If cared for properly, the average lifespan of clownfish is hard to pin down but in my 36 years as a hobbyist and business owner at Aquarium Specialty we have had several clownfish live for 10 years or more with one fish living in a store display tank for about 17 years before we lost her. 

Let us answer some of the most common questions regarding the longevity of clownfish.

Firstly, How Big of a Tank Do Clownfish Need?

To preserve the health and lifespan of your clownfish, you need a well-established saltwater aquarium with stable water conditions and sufficient filtration. Also having a larger aquarium will help. With more room to swim there is typically less aggression when keeping more than 2 clownfish together in the same tank. Aggression by clownfish usually increases as clownfish age become sexually mature. Therefore, if you are planning to keep more than one pair together in an aquarium then consider having a large aquarium that is 125 gallons or more. Typically the larger the tank size, the less territorial fighting there will be. As a thumb rule, a 33 gallon aquarium tank (or larger) is recommended. With an aquarium that is at least 33 gallons, you need not be concerned about buying a larger tank for your clownfish as they grow larger.

You Might Also Be Wondering: How Many Clownfish Should Be Kept Together?

It is crucial to select species for your tank mates that get along well with clownfish and won't harm them. Clownfish should ideally be kept in pairs or small groups, each with a dominant female and a lesser male. Stress leads to aggression and fighting and eventual death from keeping too many clownfish together in a tank that is too small. To limit aggressive behavior, it is recommended to introduce all the clownfish you plan to keep in an aquarium all at once but in many cases a new and smaller clownfish of the same species can be introduced at a later date. To more safely do this we recommend using a fish acclimation box.  

Most Importantly: What Are the Tank Cleanliness and Maintenance Requirements for Clownfish?

 A vital part of caring for clownfish is maintaining ideal water conditions. In order to keep your clownfish healthy for many years, it is important to be consistent with tank maintenance and keeping water parameters and water temperature settings stable. In general tropical marine fish water temperatures should be kept between 75 and 82 degrees Fahrenheit, and to do this we recommend using a quality submersible heater or heaters. With heaters redundancy is best so we think it’s best to use two heaters in an aquarium whenever possible. As mentioned above, keeping stable parameters is also important. For pH we recommend keeping the pH between 8 and 8.5. It is also best to keep an eye on nitrate levels on an established fish only tank (no corals on anemones) it is recommended keeping nitrates below 20 ppm. Don't forget to do periodic partial water changes (10–20% of the tank volume) to restore trace elements and dilute contaminants. When you replace the water in your saltwater aquarium, vacuum the substrate to get rid of any leftover food and debris.

Final Word

Thus, by carefully considering tank size, species compatibility, and maintenance requirements, you can create an environment that promotes the longevity and happiness of your beloved clownfish. Make sure you know the basic facts about clownfish before you put together your tank. You might be wondering how many gallons do clownfish need, and as we have seen, a 33 gallon aquarium is suitable to meet any needs your clownfish might have. Also, if you are looking to get clownfish, it is important to source them from reputable sellers, to ensure that they are healthy and well-cared for.

Giving your clownfish the necessary care and attention will ensure their longevity and happiness and let you enjoy them for many years to come. So don’t wait, and get yourself a cute little marine buddy now.