Fish

NIWA undertakes an ambitious, complex seabed experiment

7 May 2018

One of the most challenging scientific underwater experiments ever attempted by NIWA is taking place this month on the Chatham Rise.

New Zealand fish passage guidelines

The New Zealand Fish Passage Guidelines sets out recommended practice for the design of instream infrastructure to provide for fish passage.

Blog: The inhabitants of the twilight zone of the open-ocean - 15 March

15 March 2018

Think about a futuristic world where at night time, people use different kind of self-propelled vehicles to hover across cities, illuminating the skies with different colours and shapes, while transiting around them.

NIWA expertise contributes to healthy hoki fishery

Media Release

28 February 2018

When NIWA fisheries scientist Richard O’Driscoll went to sea earlier this year, he and his team measured so many fish that laid end to end, they would have stretched for 31km.

Scientists send snapper to boot camp

Media Release

19 February 2018

At a laboratory just outside Whangarei, scientists are putting very young snapper through comprehensive physical testing - including a full medical check-up involving smell, hearing, vision, and even anxiety testing.

Hoki Survey, Chatham Rise Jan - Feb 2018

NIWA research ship Tangaroa has been chartered by the Ministry of Primary Industries to survey the Hoki fishery on the Chatham Rise during January and early February 2018.

Summer series 2017 - One fish, two fish…we're counting on you

Feature story

26 December 2017

“You almost become a fishing psychologist – you can tell by the way people walk up the ramp to get their trailer if they’ve had a good day.”

Warming ocean to alter ecosystems and affect fisheries by end of century, says NIWA scientists

Feature story

5 December 2017

Rapid warming of the ocean near Tasmania may provide a good indication of how the water around New Zealand will change as the planet warms, say NIWA scientists.

New science on inanga

The inward migrations of inanga (Galaxias maculatus) post-larvae back to freshwaters occur primarily in late winter and spring time where they are targeted as part of the whitebait fishery. In this study, we shed light on the relationships between growth attained in pelagic and freshwater environments.

Aquatic invertebrate traits database

Approximately 500 Aquatic invertebrate taxa are described in this database, made available to assist with the identification of specimens.

Double trouble from oyster pathogens

Feature story

8 October 2017

The spread of Bonamia ostreae from Marlborough Sounds to oyster farms in Big Glory Bay (Stewart Island) could spread to the valuable wild oyster population.

Revealing toothfish secrets

Feature story

5 October 2017

The Ross Sea Marine Protected Area (MPA) in the Southern Ocean will help further research into the ecology of Antarctic toothfish.

Scientist makes new homes for baby paua

Media Release

15 August 2017

Twelve bespoke concrete structures resembling "upside down oven trays" may hold the key to restoring the paua population off Kaikoura wiped out by last November's earthquake.

Hapū joins forces with NIWA in tuna research

Feature story

20 June 2017

Local hapū and NIWA are working together to find out more about juvenile freshwater eels or tuna in streams connecting to the Wairua River in the Wairoa catchment in Northland.

Questions and answers about oyster disease Bonamia ostreae

Media Release

14 June 2017

NIWA is today issuing some scientific information on the parasite Bonamia ostreae, recently discovered in Big Glory Bay, Stewart Island, and the risk it poses to the Bluff oyster fishery.