AnalysisThe Week's Must-Reads: An ocean-going salmon farm, a deal thwarted by tariffs, Alaska frets over RussiaIntraFish brings you the top stories from a busy week in seafood.A new way to produce salmon? Pan Ocean Aquaculture has ambitions for its Marinova venture to farm fish on the high seas.Photo: MarinovaRobin PaxtonEditor in Chief, IntraFish.com