Clownfish are actually one of the more aggressive fish of their size.

Clownfish are actually one of the more aggressive fish of their size. They are far from patient. If there is food around, they will go after it without hesitation. They will also attack divers who they think will threaten their homes. However, if you want to get to know them, you will need to find a sea anemone field. They live there thanks to a symbiosis that has evolved into clownfish becoming immune to anemone venom.