Ahi Tuna can be paired with Merlot, Pinot Noir, and rosé Wine. Though fish is often paired with white wine, 'meatier' fish like ahi tuna can absolutely go with red wine. A Rosé will also pair nicely, particularly if your ahi tunan is prepared with ingredients better suited to a white wine. The Francis Ford Coppola Diamond Collection Merlot with a 4 out of 5 star rating seems like a good match. It costs about 20 dollars per bottle.