UFC champ Amanda Nunes won't have to look far for her bucket list fight -- she can find her opponent in the comfort of her own home ... 'cause she wants to scrap with her FIANCEE!!
TMZ Sports spoke with the MMA power couple leading up to Nunes' fight with Holly Holm at UFC 239 next week ... and her fiancee, Nina Ansaroff, says she's 100% down to fight her boo.
"We already talked about it," Nina says. "After she gets the belt, I'm gonna get my belt at [115 pounds], and then we're gonna do a super-fight at 125 .