Yellowfin tuna are considered a single population in the western and central Pacific Ocean for stock assessment purposes. There is the potential for some mixing between eastern and western stocks to occur(Davies et al. 2014).

Vietnamese tuna fisheries primarily occur within three provinces: Binh Dinh, Phu Yen and Khanh Hoa. There are four main fishing gears, longline, purse seine, handline and gillnet. During 2011, there were 714 longline vessels fishing in these three provinces and in 2012 there were 1,678 longline vessels.