Projected redistribution of tuna further east has implications for the economic benefits derived from industrial fisheries, and for the supply of tuna for food security. Several practical adaptations can reduce the risks to PICTS in the west and optimise the benefits for those in the east. The aim of this policy brief is to: alert Pacific Island countries and territories (PICTs) to the projected effects of climate change on the contributions that oceanic fisheries make to economic development and government revenue; and identify the adaptations and policies needed to reduce the threats and capitalise on the opportunities.