How Much Fat In Canned Tuna Fish?

How Much Fat In Canned Tuna Fish? A 4-ounce serving of white tuna contains: Calories: 145. Protein: 26.77 grams. Fat: 3.37 grams. How healthy is canned tuna? Canned tuna is among the healthiest, most affordable sources of protein you can buy. The fish is rich in anti-inflammatory, heart-protective omega-3 fatty acids, contains anywhere between 20