The CEO of Polish seafood processing giant Milarex says the salmon market is changing, with a switch to more convenient, ready-to-eat products and smaller packages.

"We have changed to smaller packages with great success," said Thomas Farstad, speaking at a joint Fish Pool and DNB seminar in Barcelona on the eve of the world's largest seafood show.

"There are many reasons for this, including the fact that households in general have become smaller."

The company, which is owned by Norway's Summa Equity and processes large quantities of salmon and whitefish, now sells many more types of products than a few years ago, a concept called differentiation.