Canned Tuna (opened)Shelf Life, Storage, and Spoilage Guide
Pantry
Not RecommendedUnsafe
Once opened, canned tuna must be transferred to an airtight container and refrigerated immediately. Do not store in the opened can.
Refrigerator
3-4 days
Transfer opened tuna to a clean, airtight container before refrigerating. Do not store in the original can.
Freezer
2-3 months
Transfer opened tuna to a freezer-safe, airtight container or heavy-duty freezer bag. Label with the date.
Signs of Spoilage
- Sour or off odor
- Slimy texture
- Darkening or discoloration
- Mold growth
- Any signs of gas production (e.g., bulging container if transferred to a sealed container)
Room Temperature Safety
The 'Danger Zone' for bacterial growth is between 40°F (4°C) and 140°F (60°C).
Opened canned tuna should be refrigerated promptly. Discard any opened tuna left at room temperature for more than 2 hours (or 1 hour if above 90°F/32°C).
Safe Handling
Always transfer opened canned tuna to a clean, airtight container for refrigeration or freezing.
Do not store opened canned food in the original can in the refrigerator, as it can impart a metallic taste and may not be airtight.
Wash hands thoroughly with soap and water before and after handling food.
Avoid cross-contamination by using separate utensils for ready-to-eat foods.