Ocellaris Clownfish (Amphiprion ocellaris): Ultimate Care Guide - Fish Laboratory (2024)

Common Name(s)Ocellaris Clownfish, False Percula Clownfish , Common Clownfish
Scientific NameAmphiprion ocellaris
OriginPacific ocean and Eastern Indian Ocean
Temperature Range75-82°F
Water ParametersSalinity- 1.020-1.025, pH- 8.0-8.4
Adult Size3in
DietMarine flakes can complement live and frozen foods, algae, vegetable matter, and meaty food.

Table of Contents

Ocellaris Clownfish (Amphiprion ocellaris): Ultimate Care Guide - Fish Laboratory (1)

At this point, everyone knows what a clownfish is. Animated hits such as Finding Nemo and Finding Dory have turned the clownfish into an iconic saltwater fish. The Ocellaris Clownfish is no exception to that. Many children and even adults want a Nemo of their very own after seeing the hit movies. If you’re one of the many who want to add an Ocellaris Clownfish to your aquarium, then you’ve come to the right place. These iconic fish aren’t too tricky to keep; with some research, you’ll be perfectly set. Keep reading to see if you’ve found the right “Nemo” for you.

If you’ve seen the movies, you likely know precisely what an Ocellaris Clownfish looks like. They have bright orange bodies with three stripes on them. The tips of each of their fins are also black. This color scheme and unique patterns make them highly coveted and well-liked. But the movies aren’t the only reason Ocellaris Clownfish are so popular. These fish were popular long before Nemo, and that is because of how easy they are to care for.

The Ocellaris Clownfish, also known as the False Percula Clownfish, the Common Clownfish, or even Nemo, is an extremely popular choice for saltwater reef tanks. Ocellaris Clownfish are originally found in the Western Pacific Ocean and the Eastern Indian Ocean. There they are usually found nestled in a sea anemone, seldom straying too far away from it.

If well cared for, these fish can even become a part of your family. They are known to follow their followers as you walk by their tank; sometimes, they may even eat out of your hands. Ocellaris Clownfish are also the perfect choice for a community tank, as they are incredibly peaceful and friendly.

Ocellaris Clownfish and Anemone

Ocellaris Clownfish and Anemones, these sea creatures like peanut butter and jelly, always go together. The difference is that scientists aren’t exactly sure why Ocellaris Clownfish and Anemones go together, there are many theories, but nothing has been proven. Anemones are basically designed to kill fish, so how did Ocellaris Clownfish get so likely? No one knows. The tentacles of the Anemone have nematocysts.

The nematocysts typically inject anything that touches it with a paralyzing chemical. We don’t understand why the Anemone doesn’t sting the Ocellaris Clownfish. Some have theorized that a mucus-like coating on the scales of the Ocellaris Clownfish prevents this. But doesn’t it prevent the stinging? Or does it negate the poison of the stings? Only scientists can answer those questions, but they don’t have an answer.

Ocellaris Clownfish Care

So, you watched Finding Nemo, and now you want an Ocellaris Clownfish. Well, the most important thing you can learn is how to care for them properly. Ocellaris Clownfish were popular long before the movies because they are easy to care for. They don’t require much care or research, making them the perfect choice for novices and experts.

Are Ocellaris Clownfish easy to care for?

Ocellaris Clownfish are very easy to care for; they likely wouldn’t be nearly as popular as they are if they weren’t so easy to care for. These gorgeous fish don’t grow very large, making them a perfect choice for an at-home tank. They also don’t have very intense water, pH, or Temperature requirements. Ocellaris Clownfish are omnivores which makes feeding them more manageable.

These little orange fish also have a great temperament, making them a superb choice for a saltwater community tank. Just because Ocellaris Clownfish are notoriously easy to care for doesn’t mean that they should be neglected or not given the care they need. Be sure to check the water parameters and quality routinely. You should also perform regular water changes.

Temperature

Ocellaris Clownfish are native to warm ocean areas with reefs. Their native location means they typically prefer warmer water to some other species. On average, Ocellaris Clownfish prefer water temperatures between 74 to 79 degrees Fahrenheit. That high peak and small range will require a heater to maintain. A thermometer is also necessary to ensure the tank stays within the required range.

While their recommended temperature doesn’t seem very large, it is a perfect range. That range allows them to be kept in a tank with hundreds of other species. The Ocellaris Clownfish is the perfect fish to build a community tank around.

Ocellaris Clownfish (Amphiprion ocellaris): Ultimate Care Guide - Fish Laboratory (2)

Water pH

It would be a shame not to have the proper water parameters for the eye-catching Ocellaris Clownfish. A tank’s pH level is an essential water parameter that many novice aquarists and hobbyists overlook or neglect. An aquarium that houses an Ocellaris Clownfish must have a pH level between 7.8 and 8.4. That pH range is the perfect area for keeping the Ocellaris Clownfish in a community tank with many other fish species.

The pH level of any tank needs to be regularly checked for any changes. Any slight changes in pH level can cause illness or infection to any of the species in your tank – you’ll definitely want to avoid that! If you routinely check the pH level, you can catch any changes before they become a significant issue and before any of the species in your tank are negatively impacted. The species in your tank will thank you for being proactive and keeping them healthy.

Ocellaris Clownfish Size

One of the most important questions anyone should ask before adding a fish to your tank is how big these fish will grow. The size of the fish fully grown will determine the tank size needed to house it adequately. Ocellaris Clownfish can usually grow to a max size of around 4 inches in length. That puts them on the smaller side of some saltwater fish. Four inches tends to be the maximum length of an Ocellaris Clownfish, but they usually grow smaller than that, around 3 inches. The smaller size of the Ocellaris Clownfish makes them perfect for smaller tanks and beginners.

Food and Diet

Ocellaris Clownfish are omnivores, making them easier to feed than other species. Ocellaris Clownfish eat smaller crustaceans, anemone tentacles, algae, larvae, or fish eggs in the wild. As you can see, they have a very varied diet that may seem intimidating initially, but it is relatively easy to replicate their diet in a tank setting. Ocellaris Clownfish can be fed meaty foods such as several different shrimp species.

They will also eat most types of frozen food. If you don’t have algae in your tank, you can feed your Ocellaris Clownfish flakes or pellets that contain vegetables. That will help satisfy their nutritional needs.

When feeding younger Ocellaris Clownfish, you must be sure to feed them in their safety area. Their safety area is an area of the tank they will stay in until they are larger. Once they are larger, you must feed your Ocellaris Clownfish in areas without too much water flow. Young Ocellaris Clownfish should be fed three to four times daily, while adult Ocellaris Clownfish can be fed twice daily.

Make sure to give your Ocellaris Clownfish as much food as possible in three minutes. Once they are done eating, remove any extra food from the tank to prevent it from decaying and polluting the water.

Lifespan

Ocellaris Clownfish are no different than other fish species or any other pet. Their expected lifespan is mainly dependent on the care that they are given. If they are neglected, mistreated, or not fed the proper food, their lifespan will be negatively affected. The average life expectancy of an Ocellaris Clownfish is around six years, although there have been some cases of them living longer than that. Proper care, feed routines, diet, and water conditions will help your fish reach that number.

But even with the best care in the world, sometimes you can’t account for everything. You just have to give your Ocellaris Clownfish the best care possible and hope it is for the best.

Tank Size

Ocellaris Clownfish are a relatively small species, so they don’t need large tanks to accommodate them. If you plan on keeping a single Ocellaris Clownfish, you need a tank that is at least 10 gallons in volume. For additional Ocellaris Clownfish that you plan to add, you should increase the tank size by 10 gallons. If you plan to add an Anenome, you’ll need to add an additional 50 gallons.

While this may seem like a lot, it gives the Ocellaris Clownfish and the Aneonome plenty of room. Ocellaris Clownfish need space in their tank to explore, hide and swim.

Tank Setup

Setting up a tank for your Ocellaris Clownfish isn’t too hard, but it depends on what else you plan to add. Many different species of Anenomes have different lighting requirements, while Ocellaris Clownfish don’t have any specific lighting requirements. If you plan to add an Anenome to your tank, you must set up your tank with them in mind.

Ocellaris Clownfish don’t have any demanding tank setup requirements. Their temperature level needs to be between 74 – 79 degrees Fahrenheit. An Ocellaris Clownfish’s pH level must be within 7.8 – 8.4. The main intention of setting up an Ocellaris Clownfish should be to give them plenty of hiding places and protect them from water flow. That can be done by using rocks, plants, or even tank decorations. Just be sure to leave them plenty of room to swim as well.

Breeding

When owning an Ocellaris Clownfish, a natural question is how to breed them. Who doesn’t want to breed their own Nemo and impress their friends? Breeding Ocellaris Clownfish isn’t too tricky, and you can do it independently with some luck.

How do Ocellaris Clownfish breed?

The first step toward breeding Ocellaris Clownfish is identifying a male and a female. Once you have a male and female-identified, you can begin the next step. You want to raise the temperature in your tank slightly, around 83 degrees Fahrenheit. After that, the two Ocellaris Clownfish will begin courting one another. They will perform breeding rituals such as standing on their heads and pressing their dorsal fins together.

Together, they will start cleaning a rock near an Anenome to place the eggs. Following that, the Ocellaris Clownfish will produce between 50 to 500 eggs. These newly laid eggs will hatch after around eight days. However, it may take a few tries for your pair of Ocellaris Clownfish to get it right. Don’t get discouraged if they fail on the first attempt.

Ocellaris Clownfish Male or Female

Ocellaris Clownfish are very interesting because they are all born without a gender. Based on their environment, social cues, and hormone changes, they will either develop into a male or female. If you have a pair of ungendered Ocellaris Clownfish, the larger one will become a female while the smaller one remains a male. If the group is larger than two Ocellaris Clownfish, every fish except the largest one will become female.

Disease

Disease is common for most fish species, and the Ocellaris Clownfish is no different. Ocellaris Clownfish are known to be susceptible to fin rot, Marine Ich, and both Bacterial and Viral Infections. Frequent water changes and proper care can prevent most illnesses and infections.

Where can I find Ocellaris Clownfish for sale?

Ocellaris Clownfish are trendy, which means they are carried in most major pet stores such as PetSmart and PetCo. Their popularity means they will likely be held at any local fish store as long as they deal in saltwater species. On average, Ocellaris Clownfish can sell for around $10 to $25, although that price can increase based on the size of the fish.

Ocellaris Clownfish (Amphiprion ocellaris): Ultimate Care Guide - Fish Laboratory (2024)

FAQs

What is the lifespan of the ocellaris clownfish? ›

Clownfish live about 8 years in the wild and 12 years or more in a protected environment.

What size tank do you need for 2 clownfish? ›

Ocellaris clownfish aquarium

The ocellaris clownfish is often said to do well in nano aquariums, but we personally prefer a tank of 20 gallons or up for ours here at FantaSEA. This gives them plenty of swimming space and makes it possible to add a few tankmates.

Can you have 2 clownfish in a tank? ›

Since the orange clownfish is relatively small, you might be tempted to get a few for your tank, but this may not be a good idea. Unless the tank holds at least 200 gallons of water, the most ideal number of ocellaris sharing an enclosed ecosystem should always be two.

Can I put 3 clownfish in a tank? ›

It doesn't mean you couldn't have multiple clownfish, but since two are already established the odds of a third (or fourth) integrating well are much less likely. The current fish will be worried about food availability and guarding what they've already claimed as theirs.

How many clownfish should be kept together? ›

They are social fish, and as such it is recommended that at least two are kept in aquariums. In the past, Clown fish for aquariums have always been caught in the wild from the reef.

Do clownfish really lay 400 eggs? ›

When a female is ready to mate, the male will perform a courtship and the female will deposit 400 to 1,000 eggs on the rock next or under their anemone host.

Are clownfish hard to keep alive? ›

On the positive side, Clownfish are ideal beginner fish, since they are easy-to-care-for, hardy, and don't require a huge aquarium to survive happily. Because wild clownfish always stay in or near anemones in a reef environment, they require very little space. They readily eat most fresh, frozen, and dried foods.

Do clownfish need a pair? ›

For A. ocellaris and A. percula we recommend keeping it to two as they tend to pick on the smallest clown in groups any larger. You can also have success keeping these species in large harems of twelve clowns or more.

What is the easiest clownfish to keep? ›

The ocellaris clownfish, also known as the false percula clownfish or common clownfish, is one of the most popular and arguably one of the easiest marine fish to have in an aquarium.

Do clownfish need a heater? ›

Clownfish are tropical saltwater fish, thus in order to thrive, they need a heater that nearly resembles the water temps they encounter in the environment. The difficulty emerges when we take into account the typical room temperatures in our houses, which frequently dip below the range that clownfish prefer.

What is the minimum gallon tank for clownfish? ›

That really depends on a few factors, but generally, clownfish will do well in tanks that are quite small. Nano tanks of about 8 to 10 gallons are on the small end for the Ocellaris Clownfish but the fish will still do quite well in a tank that size.

What is the minimum gallons for a clownfish? ›

An Ocellaris Clownfish, which Nemo most closely resembles, requires an aquarium of at least 20 gallons, not to mention adequate filtration, pumps, water supplements, reef structure (live rock and sand), and required diets by species.

Can clownfish live in small tank? ›

In the wild, Clown fish have a small territory, and therefore can survive in smaller home aquariums, but for a number of various reasons, bigger aquariums are better. As a minimum, a Clown aquarium should be approximately 40 litres.

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