Fisheries Minister Mao Zeming revealed this at the launching of the Pacific Marine Industrial Zone (PMIZ) today in Madang.
Once fully developed PMIZ will house 10 tuna processing plants.
"There will be a new policy next year where all fish caught in PNG waters must be processed on shore," Zeming said.
He added that currently fish taken overseas for processing denied Papua New Guineans employment.
Currently the country loses revenue for tuna caught in the exclusive economy zone valued in the billions.