<P> In 2014, Bayesian model - based stock assessments were completed for four of New Zealand's main orange roughy stocks, one of which had been closed to fishing since 2000 . The stock assessments used data collected by research surveys carried out by research organizations and the fishing industry . A key factor was the use new acoustic technology, developed by the fishing industry, in recent surveys . The multi-frequency acoustic optical system (AOS) enables scientists to differentiate the types of fish acoustically' seen' during the survey and work on slopes that previously made effective surveying impossible in some areas . The AOS also has the potential to allow scientists to see in real - time video, what is being measured by the survey . Other research - derived data were also critical to the success of the stock assessments, notably age - frequencies from improved ageing methods . </P> <P> The 2014 stock assessments, which were subject to a robust peer review process, indicated that three of the stocks had recovered enough to sustain increased catches . The TACs for these stocks were subsequently increased . The fourth stock was estimated to be at a low stock status and the TAC was reduced by over 40% to allow the stock to rebuild . </P> <P> In addition, an industry sponsored Management Strategy Evaluation was completed which provided an estimate of the biomass that could support the maximum sustainable yield (≈ 25 - 27% of the unfished biomass). Based on this output, the fishing industry agreed to aim to maintain the orange rough stocks within a management target range of 30 - 50% of the unfished biomass . Further to this, a Harvest Control Rule was agreed that would define what catch limits should be given an estimate of stock status . Catch limits for those fisheries are currently consistent with the outputs of the agreed Harvest Control Rule . In May 2014, three orange roughy fisheries entered full assessment against the Marine Stewardship Council Fisheries Standard . </P> <P> The Australian orange roughy fishery was not discovered until the 1970s, but by 2008, the biomass was estimated to be down to 10% of the unfished level . It was the first commercially sought fish to appear on Australia's endangered species list because of overfishing . A number of Australian orange roughy fisheries have since been re-opened . </P>

What kind of fish is similar to orange roughy