Frozen seafood at Australian supermarkets: value, quality and what to buy

Frozen seafood is often better value than fresh for home cooking

Fresh fish at the supermarket can be significantly more expensive per kilogram than equivalent frozen product — and unlike fish at a dedicated fishmonger, supermarket "fresh" fish has often been previously frozen and thawed before display. For most home cooking purposes, buying frozen and defrosting yourself produces comparable results at a lower price.

Understanding what to look for makes frozen seafood a practical and affordable protein source.

Prawns: the most commonly bought frozen seafood

Frozen prawns are widely available at Australian supermarkets and are one of the more cost-effective seafood options when bought in larger bags. A few things to compare:

Green (raw) vs cooked. Raw frozen prawns are generally more versatile for cooking — they can be added to stir-fries, curries and pasta directly. Cooked prawns are convenient for cold seafood platters and salads. Both are available frozen.

Whole vs peeled. Whole frozen prawns with shells and heads cost less per kilogram but require preparation. Peeled and deveined are more expensive per kilogram but save time. Compare on the actual edible yield — a kilogram of whole prawns delivers significantly less flesh than a kilogram of peeled.

Pack size. Larger bags have a lower price per kilogram than smaller bags. If you use prawns regularly and have freezer space, the larger format is worth buying.

Frozen fish fillets

Frozen basa, barramundi, cod, bream and salmon fillets are available at most supermarkets. Compare on price per 100 g of frozen product — not per pack, as pack weights vary considerably.

Frozen salmon portions are often significantly cheaper than fresh salmon at the fish counter. For cooked preparations — baking, pan frying, making fish cakes — the quality difference is minimal.

Wild-caught vs farmed. Labels on frozen fish indicate origin and farming method. For budget comparison purposes, farmed basa and similar mild white fish are among the cheapest options per serve and suit most cooking applications where a neutral fish flavour is appropriate.

Frozen squid and calamari

Frozen squid rings and calamari are inexpensive per kilogram and are one of the better-value seafood options for frying, stir-frying and adding to pasta. Compare price per kilogram and check whether the product is crumbed (higher cost, less flexible) or plain.

Reading the frozen seafood label

Check:

• Country of origin — Australian-caught is labelled as such; most frozen seafood at Australian supermarkets is imported from Southeast Asia or the Pacific, which is why the price is lower.
• Added water or glaze — some frozen seafood products include a glaze (ice coating) or added water that increases the listed weight. Where possible, compare on drained weight.
• Species name — generic labels like "white fish" cover multiple species; specific species names indicate more consistent product.

Comparing prices before a seafood shop

Frozen seafood products have consistent SKU names and are worth comparing across chains before buying in larger quantities. Run a search on TrolleyChecker to compare retailer pricing before your next shop.