Tuna that's stored in water is going to have fewer calories and less fat than the kind stored in oil. That's because oil is loaded with fats that infuse into the fish as it sits in the can.

The nutrition and mercury content of tuna will vary depending on the species. "There are so many varieties and the fat content also differs," says Largeman-Roth. One of the most popular types of ...

“Wild-caught salmon generally contains 170 calories and 10 grams of fat per 3-ounce meal. However, tuna is a lower-calorie option, with just under 120 calories and 1 gram of fat per 3-ounce meal ...

It’s also low in fat, Dr. Vogliano noted — but that means it has fewer omega-3 fatty acids than some other seafood. There’s not a huge nutritional difference between canned tuna, sushi and a ...

"For the first two months of the season, we've had some of the only fatty tuna in the world," said Tompkins. "Fat is flavour, no different than beef. So the more fat, the more flavour.