Pollock and cod caught in Russia and processed into frozen blocks are a mainstay of the West's breaded fillet and fish finger industry. But as the noose closes on Russian supplies, which species can step into the breach is a question on everyone's minds.

Russia's bloody invasion of Ukraine has led to severe consequences for Russia's seafood exporters, with whitefish producers among the hardest hit.

The United States banned seafood imports from Russia earlier this month, taking a sizeable market off the table for Russia's cod and pollock exporters.