How Long Can Expired Tuna Fish Last? Unopened canned tuna is pretty much safe to eat for years past the date on the label, as long as the can is intact. Once you open it, canned tuna lasts 3 to 5 days in the fridge. What is this? Canned food, especially store-bought, lasts for years,
How Much Omega 3 In Canned Tuna Fish? Canned tuna typically contains 0.17 grams of omega-3 fatty acids per 3-ounce serving, according to the National Institutes of Health. Which canned tuna has the most omega-3? “The canning process doesn’t significantly reduce the omega-3 content,” according to the Wellness Letter article. “Thus canned white (albacore) tuna