The Tuna commission, which is the governing body for the world's largest tuna fishery, is meeting this week in Nadi in Fiji.
Several South American countries have recently expressed interest in becoming members of the Commission, one of which is Ecuador.
The chief executive of the PNA, Ludwig Kumoru said one of the issues that PNA is strongly opposing to is having new members, who have minimal interest in the fishery, admitted to the commission.