Betta fish (Betta splendens) are also called Siamese fighting fish for their native range and aggressive nature. ... These fish are highly aggressive, and males will fight one another, often to the death. Even females can be aggressive, though they are usually more social than males.

Are betta fish aggressive towards humans?

Bettas aren't aggressive towards people. If your pet fish bites your finger, chances are it saw your hand looming into the tank, and it got curious. These fish don't have hands to touch and figure out the strange thing in their territory.

Will betta fish attack you?

Bettas aren't called Siamese fighting fish for no reason. Because they're so aggressive they need their teeth to help them fight. ... If he's particularly aggressive he'll attack anyone. But as a rule of thumb, you shouldn't keep your betta with any fish that is brightly colored or has a long flowing tail and fins.