Flavor Flav -- Daughter Arrested After Family Fracas

Cops were called to the Las Vegas home of Flavor Flav early this morning after a family spat turned violent -- and when cops sorted it out, one of his daughters was arrested.

Law enforcement sources tell TMZ ... Flav's 19-year-old daughter Dazayna got into an argument with one his step-sons, which eventually became physical.

We're told Flav tried to break it up and got hit by his daughter for his troubles. It's unclear whether it was on purpose or by accident.

Our sources say someone in the house called the cops. When police arrived, we're told they interviewed everyone and found evidence of domestic violence. Dazayna was eventually taken in for misdemeanor battery.