Scottish west coast langoustines across the country after a deal was struck between Sainsbury's superstore and local suppliers.
Shoppers at 500 of the supermarket's 800 stores across the UK will be able to find the seafood at the fish counters.
The seafood is being provided by the Mallaig and North-west Fishermen's Association, following the creation of the Scottish Langoustine Project last year.
After an appeal for more domestic buyers of west coast langoustine, talks were opened up with several supermarket chains and Sainsbury's is the first to sign up.
Andy McTeare, Sainsbury's fish buyer, said: "We're rightly proud of this deal which not only supports the Scottish fishing industry but gives customers another delicious and sustainable product to choose from on our fish counters.
"We continue to work in partnership with fishermen and suppliers to offer the best quality UK caught fish and support the whole supply chain."
Dave Thompson, MSP for Skye, Lochaber and Badenoch, said: "This is about much more than simply a reliable new market for our fishermen.
"It is about improving the quality of product available to consumers, cutting the number of miles seafood has to travel before it reaches our dinner plates and about giving stability to some of our most fragile local economies."
Cabinet Secretary Richard Lochhead said: "It's great news that Sainsbury's customers will now be able to buy langoustines from pristine west coast waters.
"I am delighted that this project has come to fruition. I was pleased to support this approach to add value to our fantastic langoustines, as well as helping the fishing industry meet market demands and give customers what they want.
"This is just another example of our food and drink industry going from strength to strength with increasing numbers of people, at home and abroad, appreciating just how fantastic Scottish produce is."