Ocellaris Clownfish is one of the most popular saltwater aquarium fish, also known as Amphiprion ocellaris. They are very adorable, small and colorful. Its body’s bright orange and three white bands make it more vibrant to see. If you are planning to have them in your aquarium, choosing an aquarium with a minimum size of 20 gallons is better.
How Many Ocellaris Clownfish in a Tank
The Ocellaris Clownfish is a popular tropical fish, and many people keep them in tanks. How many Ocellaris Clownfish should you have in your tank? There is no definitive answer to this question, as it depends on the size of the tank and other factors. However, a rule of thumb is to keep no more than one pair of Ocellaris Clownfish in a tank of at least 20 gallons. Keeping one pair of Ocellaris Clownfish per tank is recommended to control their aggression.
Tank size for Ocellaris Clownfish
The minimum tank size for Ocellaris Clownfish is 10 gallons. But most aquarists have their Ocellaris Clownfish in a 20 to 90 gallons tank. An important factor in measuring the ocellaris clownfish’s tank size is considering its tank mates like other fish, corals, and invertebrates. Besides this, if the fish or mates are aggressive, they need more space to live together. Expert aquarists recommend to keep 1 pair of Ocellaris Clownfish per tank.
Tank size | Number of Ocellaris Clownfish |
---|---|
10 Gallon | 1 Fish |
20 Gallon | 1-2 Fish |
30 Gallon | 1-2 Fish |
40 Gallon | 2 Fish |
50 Gallon | 2 Fish |
55 Gallon | 2-4 Fish |
60 Gallon | 2-4 Fish |
75 Gallon | 4 Fish |
100 Gallon | 4 Fish |
150 Gallon | 4 Fish |
What Size Tank Does a Pair of Ocellaris Clownfish Need

If you want to keep a pair of ocellaris clownfish together, you will need a minimum 30-gallon tank. It is big enough to accommodate two clownfish and provides much space, allowing them to live healthy and happy lives.
What Happens When a Clownfish is Alone?
The clownfish is a great social fish, but it can survive independently. They can live solitary lives in the fish tanks. When they are alone in the tank, they will utilize each corner of the tank. They will get a large space to swim freely and explore the surroundings.
Do Clownfish Need to be in Pairs?
There has been a lot of recent speculation about whether clownfish need to be in pairs to survive. The answer is no, as long as they have access to a suitable environment and enough food. It isn’t mandatory for clownfish to be in pairs.
In the wild, clownfish live in a small group, but they are not schooling fish. For breeding, they mate with a larger female and a smaller male.