Where to Store Raw Fish

Fish storage has gotten muddled with conflicting advice about shelves, drawers, and temperatures flying around online. As someone who has dealt with fish going bad faster than expected more than once before getting the basics right, I learned that proper refrigerator storage is actually straightforward once you understand a few key principles. Today I’ll explain exactly what to do and why it matters.

The Ideal Refrigerator Temperature

Start here, because nothing else matters if the temperature is wrong. The FDA recommends keeping refrigerator temperatures at or below 40°F (4°C). At this temperature, bacterial growth slows significantly — not stops, but slows enough that fish stays safe for a reasonable storage window. Above 40°F, bacteria multiply much faster and the safety window shrinks quickly. Check your refrigerator’s actual temperature with an inexpensive thermometer rather than relying on the dial setting, which isn’t always accurate.

Dedicated Storage Space

Raw fish belongs on the bottom shelf of the refrigerator. This is the coldest consistently-maintained location in most refrigerators, and more importantly, it prevents any potential drips or leaks from contaminating foods stored below it. If your refrigerator has a dedicated meat or seafood drawer with separate temperature control, use it — these compartments are designed to maintain conditions specifically suited to raw proteins.

Keep raw fish away from ready-to-eat foods, cooked food, and raw vegetables. Cross-contamination from raw seafood is a real food safety concern. Separate shelves or containers are the practical solution.

Air-Tight Packaging

Fish deteriorates faster when exposed to air. Wrap it tightly in plastic wrap or store it in a sealed container to minimize oxygen exposure. Vacuum sealing is the gold standard — it removes essentially all air and extends freshness significantly beyond what plastic wrap alone provides. If you’re storing fish you caught yourself or bought from a fish counter rather than sealed packaging, rewrapping it before refrigerating is worth the sixty seconds it takes.

Use of Ice Packs

For extra margin, particularly if your refrigerator runs warmer than ideal or if you want fish to stay at peak quality as long as possible, store it surrounded by ice packs. Place ice packs beneath the container or on either side. This is the same approach professional kitchens use and it’s effective. The ice melts slowly rather than adding moisture to the fish because it’s outside the container, so there’s no quality penalty.

Minimizing Cross-Contamination

The thing is, raw seafood is one of the higher-risk items for cross-contamination in a household refrigerator. Keep it in a sealed container, not just on a plate. Keep it away from anything you’ll eat without cooking. If raw fish juice somehow gets on a shelf, clean it immediately rather than waiting for your regular fridge cleaning cycle. These aren’t overly cautious precautions — they’re the standard practices that food safety guidelines exist around for good reason.

Storing Different Types of Fish

Sushi-grade fish designated for raw consumption requires stricter handling than fish you plan to cook. Consume it within one to two days of purchase and keep it as cold as possible during storage. If you won’t use sushi-grade fish within that window, freeze it following proper freezing protocols — many parasites in raw fish are killed by commercial freezing, which is part of why reputable sushi restaurants freeze their fish before service. Home freezers may not reach the temperatures required for this purpose, so when in doubt, use it fresh.

Regular Cleaning and Maintenance

Refrigerators that store raw fish regularly need cleaning attention. Any spill or leak from raw fish packaging needs to be cleaned up immediately — don’t leave it for your next regular cleaning cycle. The bacteria present in raw seafood can transfer to shelves and then to other foods. A quick wipe-down with a food-safe sanitizer takes two minutes and prevents a problem that would take much longer to deal with if it caused illness.

Using Refrigerator Drawers

Meat and crisper drawers with humidity controls are underused in most households. The settings typically labeled “low humidity” or “high humidity” control how much airflow the drawer gets. For raw fish, a lower humidity setting (more airflow) is generally appropriate — this helps prevent the moisture buildup that accelerates spoilage. Check your appliance manual for the specific guidance for your model, as settings and labeling vary by manufacturer.

Monitor the Fridge’s Thermometer

Built-in thermometers age and drift. An inexpensive refrigerator thermometer placed on the same shelf where you store fish gives you a reliable independent reading. Check it occasionally rather than assuming your refrigerator is consistently holding the right temperature. Refrigerators that are overpacked or opened frequently struggle to maintain target temperatures more than lightly loaded ones.

Label and Date Your Fish

This is a simple habit that prevents the common situation of staring at an unlabeled package and trying to remember when you bought it. Write the purchase date on the packaging before it goes in. Raw fish should generally be used within two days of refrigerator storage — after that, the risk of quality decline and spoilage increases significantly. Labeling also helps when multiple people are using the same refrigerator and might not know when something was stored.

Take Action If Fish Smells Off

Fresh fish should smell like clean ocean air or very mildly of fish. A strong, ammonia-like, or sour odor means something has gone wrong. Don’t try to make it work — discard it. Foodborne illness from spoiled fish is unpleasant at best and serious at worst, and it’s entirely avoidable. Trust your nose. If something doesn’t smell right, it isn’t right.

Freezer Storage for Extended Preservation

If you won’t use fish within two days, freeze it. Wrap tightly in plastic wrap or vacuum seal, then place in a freezer bag to protect against freezer burn. A freezer set at 0°F (-18°C) or lower will keep fish safe indefinitely, though quality declines after three to six months for fatty fish and slightly longer for lean white fish. Label with the species and date before freezing.

Ideal Thawing Practices

The safest way to thaw frozen fish is overnight in the refrigerator. This keeps the fish at a safe temperature throughout the thawing process and produces better texture than rapid thawing methods. If you need it faster, submerge the still-sealed package in cold (not warm) water, changing the water every 30 minutes. Never thaw fish at room temperature — the exterior of the fish can reach the bacterial growth danger zone (above 40°F) while the interior is still frozen, creating conditions you don’t want in something you’re about to eat.