The study looked at official data between 1950 and 2013, and found that 24.7 million tonnes of fish went unreported, compared to 15.3 million that was reported.

Read more: http://www.newshub.co.nz/nznews/explosive-research-reveals-true-nz-fisheries-catch-2016051609#ixzz48laRkPNv

This is the difference between the findings of scientists employed by the commercial fishing sector, and other scientists with no vested interest.