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

Fish

NIWA has a range of expertise related to ocean fish, including surveys and monitoring of fish populations, and aquaculture species research

  • Chinook salmon

    NIWA is working with major Chinook salmon producers to explore alternative farming technologies that circumvent the need for additional inshore marine farming space.
  • The adult brood-stock hapuku at Northland's Marine Research Centre

    Aquaculture nutrition

    Service
    Nutrition underpins the performance of fish stocks in terms of health, growth (production) and reproduction.
  • Kingifsh eggs being assessed under a microscope at NIWA's Northland Aquaculture Centre

    Aquaculture Reproduction

    Service
    One of NIWA's core areas of research and consultancy services are the broodstock development of aquaculture species and breeding strategy.
  • Koi

    Innovative Methods in Tackling Pest Fish: The Power of Sound and Light

    Publication article
    Could bubbles and strobe lights stop pest fish swimming where they’re not wanted?
  • BAFF_banner_image

    The Bio-Acoustic Fish Fence

    Research Project
    Investigating the effectiveness of an acoustic bubble-screen in minimising the movement of pest fish
  • Blue cod and kitten

    What do kittens and blue cod have in common?

    Media release
    Strange fish behaviour has been captured by NIWA scientists
  • NIWA marine bio tile

    NIWA Biodiversity Memoir 136 - The Marine Biota of Aotearoa NZ

    New Zealand’s marine biodiversity checklist has been updated, representing an increase of 3,630 known living species since the turn of the century.
  • NIWA solves seafloor mystery

    Media release
    NIWA scientists have discovered the origins of cryptic markings found in Aotearoa New Zealand’s deep sea.
  • NIWA’s freshwater ecologists helping regional councils remove the barriers to fish migration

    News article
    About 76 per cent of indigenous freshwater fish species, that’s 39 out of 54, are threatened with extinction or at risk of becoming threatened.
  • Researchers to unveil Antarctic secrets

    Media release
    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.
  • What’s in a fish’s ear?

    Feature story
    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.
  • Chasing deepsea shadows

    Feature story
    Mia Blyth catches up with a marine biologist hunting for ocean ghosts.