- How long does frozen raw tuna last? The precise answer to that question depends to a large extent on storage conditions - keep raw tuna frozen at all times.
Properly stored, frozen raw tuna will maintain best quality for about 9 months in the freezer, although it will usually remain safe to eat after that.
Is frozen raw tuna safe to eat after the expiration date on the package? Yes, if properly stored - commercially frozen raw tuna will typically carry a “Best By," "Best if Used By," “Best Before”, or "Best When Used By" date but this is not a safety date, it is the manufacturer's estimate of how long the frozen raw tuna will remain at peak quality.
How long will frozen raw tuna remain safe to eat? Frozen raw tuna that has been kept constantly frozen at 0°F will keep safe indefinitely, as long as it has been stored properly and the package is not damaged.
How to tell if frozen raw tuna is no longer good? If dry spots or discoloration have developed on the frozen raw tuna, freezer burn has begun to set in - this will not make the raw tuna unsafe to eat, but it will harm the texture and taste.
Sources: For details about data sources used for food storage information, please click here