The tuna catch hit a record high in 2009, reaching more than 2.4 million tons.
The figures come from research conducted by the Secretariat of the Pacific Community.
The findings were presented to the Western and Central Pacific Fisheries Commission in Tonga.
Scientist Shelton Harley led the SPC research team and said the record catch may mean further reductions in Pacific tuna fishing.
For several years the Scientific Committee had been recommending reductions of around 30 to 40 percent for big-eye tuna.
Between now and December, SPC will be undertaking further analyses to give the commission some indication of the levels of reduction that may be necessary.
