Fresh tuna is naturally higher in protein and contains a few more calories. A 100g serving of canned tuna (in brine) provides: When you buy tuna canned in oil, you can expect the fat content to ...

Salmon and tuna are ... in fat and calories, says registered dietitian Frances Largeman-Roth. According to the U.S. Department of Agriculture, one serving (3 ounces) of fresh wild sockeye salmon ...