TMZ has obtained Flavor Flav's daughter's mug shot ... taken moments after the 19-year-old was arrested for battery stemming from an altercation at the rapper's Las Vegas home.
As we first reported, cops arrested Dazayna Drayton early Sunday morning following a family spat.
Sources tell TMZ ... 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.
Law enforcement tells us ... Drayton has since been released from custody.