Fisheries

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

Kaharoa II

Kaharoa II

The state-of-the-art science platform has the capability of a larger vessel for a vast array of applications across the marine environment. Available for charter, Kaharoa II is a cost-efficient vessel with the latest equipment and technologies to enable world-class science

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    Snapper

    Open wide: snapper teeth secrets

    News article
    12 May 2023
    NIWA and University of Auckland masters student Georgia Third is getting up close and personal with snapper guts and teeth to understand the differences between biologically distinct snapper populations in New Zealand.

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    Casal2 software logo

    Population modelling software Casal 2

    Software Tool/Resource
    Casal2 is an advanced software package developed by NIWA for modelling the population dynamics of marine species.

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    Snapper

    Fisheries & ecosystems

    NIWA will be determining the impact of fisheries on the aquatic environment. This will inform an ecosystem-based approach to fisheries management and the development methods to mitigate this impact.
    Fisheries

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    International fisheries

    NIWA aims to develop and apply standardised methodologies to monitor and assess international fisheries outside the New Zealand EEZ and determine the environmental effects of fishing in these areas.

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    Half of NZ’s rivers blocked for migratory fish

    Media release
    25 January 2023
    Nearly half of New Zealand’s river network is partially or fully inaccessible to migratory fish, a new study shows.
    Fisheries
    Rivers
    Freshwater

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    Image of snapper mortality research

    Fisheries stock assessments

    Service
    To get the most benefit from a fish stock in the long term, we need to maximise our yield without damaging the fish population we rely on.

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    Researchers to unveil Antarctic secrets

    Media release
    11 January 2023
    As New Zealanders search for the summer sun, 38 researchers and crew will board RV Tangaroa tomorrow for a six-week science voyage deep into the waters of Antarctica.
    Antarctica
    Fish
    Oceans

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    New research indicates careful fish handling helps support sustainable fisheries

    News article
    14 December 2022
    Initial data suggests careful handling of released snapper could help fishers save thousands of fish annually.
    Fisheries
    Oceans

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    RV Tangaroa: New Zealand’s world-class research vessel

    NIWA proudly owns and operates RV Tangaroa, a 70 m Ice Class scientific platform.
    Fisheries
    Ocean modelling

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    Going easy on the scallops

    Feature story
    31 May 2022
    From scallop beds to trawl nets, a little bit of data science can make a big difference. Melissa Bray explains.
    Stock assessments and surveys
    Oceans
    Benthic habitats

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    What’s in a fish’s ear?

    Feature story
    31 May 2022
    The tiny ear bone of a fish holds a wealth of information. Gather enough and you get a snapshot of what’s happening beneath the waves. Stuart Mackay explains.
    Fisheries
    Fish
    Stock assessments and surveys

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    Snapped! Tag reveals fish’s 20-year history

    Media release
    31 May 2022
    A fish has been caught in the same location that it was tagged, nearly 20 years ago to the day.
    Fisheries