You can combine fried tuna with a sturdy, wood-aged Chardonnay, but it is more exciting to choose a not too heavy red wine with sufficient fresh acidity.
For red wine you can choose a Pinot Noir, that is a safe choice. But there are other, more exciting wines to be found, which are surprisingly often made in a coastal region, for example in Croatia or Italy.
2022 | Kroatië | Hvar
Light-footed Croatian red from the island of Hvar on the Adriatic coast. Plums and berries. Some green tannin. Can be served slightly chilled with grilled tuna.
Orange wine (31) 
Fresh (95) 
Light (34) 
Rosé (17) 
Aromatic (20) 
Medium (97) 
Sparkling (30) 
Ripe (71) 
Full-bodied (96)