Are clarkii clownfish aggressive?

It is true that there should not be more than one pair of clarkii clownfish in a tank. Having more than one pair can trigger the fish to become aggressive.

Basically, the clarkii clownfish is a peaceful fish. However, if you combine two clarkii clownfish in one tank, both fish will become very aggressive. SO, it's best not to have both clarkii clownfish in one tank!

You need to know before keeping clarkii clownfish. Clarkii clownfish can become aggressive when there are other fish in the tank. Therefore, you should only fill one tank with a pair of clarkii clownfish.