How to Store Fresh Seafood in the Fridge for Maximum Shelf Life

Australians have a deep love affair with fresh seafood, from Sydney Fish Market queues at sunrise to weekend oyster runs along the Victorian coast. The catch that arrives home sparkling and briny one afternoon can quickly turn into a wasted dinner if it sits in the fridge the wrong way. Under FSANZ guidelines, raw seafood must be kept at 5°C or below, yet many home fridges hover closer to 7°C. A small thermometer pays for itself in a single weekend and turns storage from guesswork into routine.

The steps below walk through every stage from the shopping bag to the fridge shelf, so the prawns, fish and shellfish you bring home stay bright, firm and safe to eat over several days.

Choosing the Freshest Catch Before Storage

A long shelf life starts at the counter. A truly fresh whole fish smells like clean sea spray, never sour or ammonia-like. The eyes should be clear and convex, the gills ruby red, and the flesh should spring back when pressed. Australian fishmongers at Queen Victoria Market in Melbourne or the Saturday markets in Adelaide will happily slice a piece to check translucency before you buy. If a fillet looks milky or weeping, leave it on the ice.

For shellfish, ask whether oysters were shucked that morning. Live mussels and clams must close tightly when tapped; any that stay open should be discarded at the shop. Prawns purchased whole keep longer than peeled ones, since the shell protects against oxygen. When buying packaged seafood, check the use-by date and make sure the pack feels cold, not just cool.

Prep Work: Cleaning, Rinsing and Patting Dry

Bringing seafood straight from the bag to the fridge is a common shortcut, but a minute of prep buys an extra day of life. Rinse whole fish and fillets briefly under cold water, then pat them thoroughly dry with paper towels. Surface moisture feeds bacterial growth, so the drier the flesh, the slower the spoilage.

For prawns still in their shells, a quick rinse and dry is enough. Pre-peeled prawns should sit in a colander for ten minutes to drain off excess liquid. Live oysters, mussels and pipis do not need rinsing; place them in a bowl, discard cracked shells, and drape a damp tea towel over the top rather than sealing them airtight, since molluscs need to breathe.

Setting the Right Fridge Temperature and Zones

Set the fridge between 0°C and 4°C, and use a thermometer to confirm. The coldest zone in most Australian fridges sits at the back of the bottom shelf, where cold air sinks. Avoid the door shelves, which warm up every time the milk is grabbed, and never place seafood next to raw chicken or red meat where drips can cross-contaminate.

For households in Cairns or Darwin where temperatures regularly exceed 30°C, place a tray of ice packs beneath the seafood container. This is the same trick retailers at the Sydney Fish Market use before wholesale trucks leave at dawn. Order fresh cuts through the Meat Stock Exchange shop and have them delivered cold and ready for the fridge on the same day.

Wrapping and Containers That Lock Out Air

Air is the enemy of stored seafood. Wrap fillets and steaks tightly in cling film, pressing out as much air as possible, then slide them into a zip-lock bag. Vacuum-sealed bags are worth the small investment, especially for Tasmanian salmon portions or coral trout fillets. Whole fish can be wrapped in damp newspaper and placed in a plastic bag, the way fishmongers have done for generations.

Airtight containers work well for prawns, scallops and squid rings. Place a sheet of paper towel at the bottom to absorb moisture released during the first day, and swap it the next morning if saturated. Glass beats plastic because it does not absorb odours and can move straight from fridge to oven.

Storing Different Seafood Types

Whole flathead, snapper or barramundi will keep for one to two days in the coldest part of the fridge. Fillets and cutlets last two to three days if wrapped correctly. Peeled prawns stay fresh for two days, while shell-on prawns hold for three to four. Live oysters and mussels, kept cool and covered with a damp cloth, last up to three days; discard any that open and refuse to close when tapped.

Squid and octopus are forgiving and can last three days if cleaned and dried before wrapping. Crabs and lobsters, if bought live, are best cooked the same day; pre-cooked versions should be eaten within two days. Always store raw seafood on the lowest shelf to avoid drips onto cheese, fruit or leftovers.

Common Mistakes That Shorten Fridge Life

The biggest mistake is leaving seafood in the original supermarket tray. Those polystyrene trays often hold melted ice water that feeds bacteria, and the plastic film is rarely airtight, so repack on arrival. Overloading the fridge during summer entertaining raises the internal temperature and risks every item inside. For a backyard barbecue in Adelaide, space out the shelves and turn the fridge setting down a notch before guests arrive.

Avoid washing fish repeatedly, since extra handling breaks the flesh and exposes more surface area to bacteria. Never refreeze seafood that has fully thawed; cook it first, then freeze the cooked dish if needed. Do not rely on smell alone once a fillet has been sitting for two days, since smell changes only after spoilage is well underway. Mark the date on the packaging so there is no guessing.

Reheating and Using Up Stored Seafood

When it is time to cook, bring the seafood out of the fridge ten minutes early and pat it dry once more. Cook it to an internal temperature of 63°C, as recommended by FSANZ. Eat cooked leftovers within two days and reheat them only once. Curries, pasta and fried rice are forgiving ways to use up prawns or white fish approaching the end of their window.

If the freezer is a better option, raw seafood freezes well for two to three months if vacuum-sealed. Label every package with the date and species so fillets stacked together do not become anonymous. For busy households, picking up seafood meal combos removes the planning from seafood nights and guarantees correct handling from shop to plate.

Fresh seafood belongs at the centre of the Australian table, from a Perth Christmas prawn platter to a Hobart weeknight curry. Store it well, trust the thermometer over the calendar, and let the ocean's sweetness do the rest. Browse inspiration for your next fish dish with these fish curry serving ideas and put these storage habits into action before your next trip to the fisho.