The Ocellaris Clownfish

Ocellaris Clownfish
Ocellaris Clownfish
(Amphiprion ocellaris)


Ocellaris Clownfish is a beautiful small fish with oval shape body, found in various colors.  It is also known as common clownfish and is a popular fish for saltwater aquariums. It is one of the easiest fish to keep in a community aquarium and thus ideal for beginners.

General Profile

Biological Name

Amphiprion ocellaris


Eastern Indian Ocean

Other Locations

Pacific Ocean, Northern Territory in Australia


Reddish brown with white and black circles

Body Shape

Oval shaped body


Peaceful, but may be territorial in aquarium settings if more than one specimen not introduced at the same time.


In wild, they form a symbiotic relationship with sea anemone for protection and shelter.

Conservation Status

Least Concern

Social Behavior

Ocellaris Clownfish forms various social groups in wild. They form a symbiotic relationship with sea anemone for shelter. Juveniles are usually chased away by territorial adults out of their anemones and have to find other anemones. They exhibit monogamous behavior. Ocellaris Clownfish is a hermaphrodite wherein its sex can change during its life time. Most aggressive specimens are usually females, followed by lesser aggressive ones as males. Juveniles can turn into male or female later.

Aquarium Level Profile

Aquarium Care Index

Low. Quite comfortable with captive environment of aquarium

General size in Aquarium

Up to 2.5 to 3 inches

General Life in Aquarium

Up to 10 years.

Desired Water Temperature

73 to 77° F

Desired Water pH levels

8.2 to 8.4

Desired Specific Gravity

1.021 to 1.025

Water Requirement

30 gallons for a single specimen, additional 10 gallons per specimen


Omnivorous, feed on plankton, algae

Specific Disease

Watch out for Cloudy eyes, white fins and discoloration. If a disease is detected, quarantine promptly and start treatment.

Aquarium Care Basics

The Ocellaris Clownfish is the most suitable fish for beginners. They are usually comfortable in all types of tanks as long as tank parameters are in suitable limits. Tanks as small as 20 gallons are also fine as they usually do not need a lot of swimming room. Add some live rock to make them feel comfortable.

It is preferable to quarantine them for 2 to 3 days, to ensure they are in best of health. If introducing more than one specimen of Ocellaris Clownfish, introduce them all at same time.

In order to give them a longer life, ensure to change water at regular intervals. Ammonia levels should be kept under strong control. Although this fish does not need a high intensity light, however, the aquarium should still have decent intensity lighting for aquarium plants to keep the nitrogen cycle and other harmful chemicals in control.

They are usually fine in a community saltwater aquarium; however, one should avoid keeping them with large carnivorous fish.

Ocellaris Clownfish will happily accept a wide variety of diet. Pellet food is a good choice for them. They need to be fed daily once and should be given only as much as they can finish in 5 minutes.

Interesting Facts

Ocellaris Clownfish is used commonly in research due to its capability to breed easily. For more info on clownfish breeding follow the link.

Ocellaris Clownfish featured in a film titled ‘Finding Dory’

I Appreciate You!

I just wanted to wrap things up by saying that I’m here for you. I want you to succeed as you begin with your saltwater aquarium efforts. Feel free to contact me. I will do my best to respond to your emails and answer any questions you my have about getting started with your saltwater aquarium.

Thank you so much for your support and I would love for you to drop me a line on my Facebook Page. I look forward to meeting you.

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Related Articles:

How to breed Clownfish

Maroon Clownfish Care

Tomato Clownfish Care

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