On 1 July 2025, NIWA merged with GNS Science to become Earth Sciences New Zealand.

Fisheries

Balancing the sustainability of our fisheries stocks and the impacts of fishing on the environment with the economic opportunities

  • Spatial management of the Ross Sea

    The fishery is managed differently depending on the region and specific environmental protection and fishery management objectives in the region.
  • Ecosystem effects of fishing

    Find out about the role of toothfish in the ecosystem and the potential effects of fishing.
  • The Ross Sea shelf survey

    A survey series in the Southern Ross Sea was started in 2011 to index juvenile abundance.
  • Antarctic toothfish stock assessment

    CCAMLR sets annual catch limits, using a stock assessment model.
  • The toothfish fishery

    Find out more about the toothfish fishery, including its history, catch, sea ice influences and fishery operational requirements.
  • Toothfish life history

    Find out about the biology of the Antarctic toothfish.
  • Management of Antarctic fisheries

    Find out more about fisheries in the Southern Ocean, New Zealand's role, and fisheries management.
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    Even more flexibility with fisheries software CASAL II

    Feature story
    NIWA-developed software is becoming the international standard in the assessment and management of fish stocks.
  • Ecosystem modelling

    Research Project
    At NIWA, we’ve developed an Atlantis model for the Tasman and Golden Bays region. We’re also developing one for the Chatham Rise.
  • Summer Series Week 2: Sharks of summer

    News article
    Everyone knows they’re out there, but how well do you know your sharks? NIWA looks at four of the most common sharks you’re likely to spot this summer.
  • The Fishes of New Zealand

    Media release
    Te Papa has released a publication containing information, including pictures, distribution maps for all 1,262 known fish species found in our waters.
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    NIWA counting fish in Marlborough Sounds

    Media release
    Recreational fishers in the Marlborough Sounds, Tasman and Golden Bays are being approached at boat ramps in the region in the hope they will provide information on their catches for a research survey.