How to store fresh seafood safely until you cook it
Keep fresh seafood cold, dry and separate, cook or freeze it within a day or two, and handle leftovers promptly. Here is a practical plan from store to pan.
Keep raw seafood at 40°F (4°C) or below from the moment you buy it, and cook it within one or two days. Food safety guidance generally takes that position, because bacteria multiply quickly when fish is warm. Between about 40°F and 140°F (4°C and 60°C), bacteria grow fastest, so the time seafood spends in that range matters more than almost anything else you do with it.
The practical steps are the same for most fish and shellfish. Keep the seafood cold on the way home, keep it dry and covered in the fridge, keep it apart from ready-to-eat foods and cook or freeze it on time. The table below summarizes the refrigerator limits, and the sections that follow explain how to meet them.
Scroll sideways to see the full table →
| Item | How long in the refrigerator at 40°F (4°C) or below |
|---|---|
| Fresh raw fish or shellfish | 1 to 2 days |
| Cooked seafood leftovers | 3 to 4 days |
Keep it cold from the store to the kitchen
Ask the seller to pack your purchase on ice or in a chilled wrap, and take it straight home. If the trip is long or the weather is warm, carry it in an insulated bag or cooler with ice packs. Keep the ice in a sealed bag so meltwater does not sit against the fish. Avoid leaving seafood in a parked car while you run other errands, because a car interior can warm quickly, especially in summer.
Once you are home, put the seafood in the refrigerator straight away. If you have a fridge thermometer, confirm the fridge is at or below 40°F (4°C). Do not leave raw seafood on the counter while you prepare other ingredients, because even a short wait at room temperature adds time you cannot easily recover later.
Plan the rest of your shopping around the seafood. Buy the fish last, after groceries that do not need cold storage, and head straight home. Once fish has spent time in a warm car or a shopping basket, that time is gone for good, so a short, direct route is the most useful thing you can plan.
Set up the fridge for raw seafood
Store raw fish and shellfish on the bottom shelf or in the coldest part of the refrigerator. Place them on a plate or tray with a rim to catch drips, and keep them away from cooked food and ready-to-eat items such as salad, bread and fruit. Raw seafood can carry bacteria that spread to other foods if juices drip onto them, so the separation matters as much as the temperature. Keep the fish off the door shelves as well, since the door is usually the warmest part of the refrigerator and warms each time it opens.
Keep the fish dry and loosely covered. Drain any liquid from the packaging and replace the paper towel if it becomes damp. A loose wrap in paper or a container with a lid lets cold air circulate while keeping the seafood from drying out.
Live shellfish needs different handling. Clams, mussels and oysters should be kept cool and damp, covered with a damp towel or kept in a breathable container. Do not seal them in plastic or submerge them in fresh water, because either can kill them. Before you cook, discard any shellfish that is already open and does not close when tapped.
Timing, freezing and leftovers
Plan to cook raw fish and shellfish within one or two days of purchase, and sooner if you can. If you cannot cook within that window, freeze it as soon as possible. Frozen at 0°F (-18°C), seafood stays safe indefinitely, but its texture and flavor are best within several months. Wrap pieces tightly in plastic or foil, or seal them in a freezer bag with the air pressed out, and label the date.
Thaw frozen seafood in the refrigerator, not on the counter, and plan to cook it within a day or two of thawing. If you are short of time, seal the frozen fish in a leakproof bag and set it in cold water, changing the water every 30 minutes, then cook it as soon as it has thawed. Avoid thawing at room temperature, because the outside of the fish can warm into the danger zone while the center is still frozen. Cooked seafood should go into the refrigerator within two hours of cooking, or within one hour if the room is hot, above about 90°F (32°C). Eat leftovers within three to four days, and do not leave cooked seafood out during a long meal or a picnic.
Pregnant people and anyone with a weakened immune system should check with a doctor before eating raw or lightly cooked seafood, since advice for those groups is stricter than for others. Discard any seafood that smells sour or unpleasant, feels slimy or has a grayish, sticky film, or that has been stored beyond its safe window. Do not taste a piece to check it. A smell or texture that seems off is enough reason to throw it away.
Good storage is mostly about time, temperature and cleanliness. A cold route home, a cold shelf in the fridge, raw seafood kept apart from everything that is ready to eat and a clear plan to cook or freeze within a day or two will keep fresh seafood tasting the way it should. The effort is small compared with the flavor and the peace of mind you protect.