Fish

Latest news

A new study has identified seven freshwater species native to Aotearoa-New Zealand that will likely be highly or very highly vulnerable to climate change.
NIWA scientists have made a breakthrough that may underpin expansion of the high-value New Zealand salmon farming industry.
NIWA researchers are heading out from Tasman early next week to survey an area thought to be home to important juvenile fish nurseries.
This award-winning kingfish sashimi dish is creating quite a splash – but it doesn’t come from the sea. We look at NIWA’s latest aquaculture success story and the new opportunities it’s on path to deliver.

Our work

Māori communities around the country note that the abundance, size and/or distribution of tuna, kōura and kāeo/kākahi is declining and that current populations aren’t sufficient to meet their needs.
Maniapoto Māori Trust Board and NIWA worked collaboratively during 2018-19 to support Ngāti Maniapoto whānau to reconnect with and participate in the assessment of their freshwater according to their values.
NIWA is in its third year of a 5-year phased project on the deepwater line fishery in Tonga funded by the NZ Aid Programme’s Partnership for International Development Fund. The aim of the project is to deliver the improved governance, management, and economic and biological sustainability of the fishery focusing on deepwater snapper and bluenose in the Tonga EEZ.
NIWA is looking for people who have had a long association with the Hauraki Gulf or Marlborough Sounds to help them with a research project on juvenile fish habitats.

Latest videos

The world's most mysterious fish

A video about The world's most mysterious fish. NIWA researchers are working with iwi to try to unlock the secrets of New Zealand tuna—freshwater eels. Every year tiny, glass eels wash in on the tide at river mouths along our coast. But where do they come from and how do they get there?

 

Science on the high seas

Sustainable fisheries depend on good scientific data about fish stocks. NIWA scientists head out into Cook Strait on Research Vessel Kaharoa to survey the hoki fishery and advise officials on catch rates.

Freshwater fish swim their all for science
The tiny inanga have been plucked from Waikato streams and held in a darkened laboratory for the last month, undertaking highly advanced testing to find the strongest, fittest and fastest fish.
Ocean acidification - what is it?

The on-going rise of carbon dioxide (CO2) in the atmosphere is not only changing our climate—it is also changing our oceans. Take a look at the work of the NIWA-led CARIM project into what these changes may mean for the delicate balance of marine life.

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.
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.
“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.”
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.
Approximately 500 Aquatic invertebrate taxa are described in this database, made available to assist with the identification of specimens.
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.
The Ross Sea Marine Protected Area (MPA) in the Southern Ocean will help further research into the ecology of Antarctic toothfish.
Concrete structures key to restoring the paua population wiped out by earthquake.
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.
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.

As New Zealand's "Mr Eel", Niwa's Dr Don Jellyman has heard every tall tale. And some of them may be true.

The role of toothfish in the ecosystem.

Inputs into stock assessment

Scientists from around the globe are meeting in Nelson next week to discuss the latest advances in fisheries technology.

Boaties in Tasman and Golden Bays are likely to notice a larger than usual vessel working close to shore over the next few days.

Effects of climate change on fish are being studied at NIWA's Northland Marine Research Centre.
A voyage to the Kermadec Islands has resulted in the discovery of many species either new to science or not previously found in the area.
Exploring the deepsea

Despite many centuries of maritime exploration, only a fraction of our planet's seafloor has been observed. NIWA Deepsea Scientist Di Tracey tells us what it feels like to probe deep beneath the waves to see what's living on the ocean floor.

Māori communities around the country note that the abundance, size and/or distribution of tuna, kōura and kāeo/kākahi is declining and that current populations aren’t sufficient to meet their needs.
NIWA scientists are asking for help from people who have had a long association with East Northland, Hauraki Gulf or Marlborough Sounds.
NIWA is looking for people who have had a long association with the Hauraki Gulf or Marlborough Sounds to help them with a research project on juvenile fish habitats.
Over the last few days the “dive team” have been recording corals, fishes, urchins and other invertebrates from the shallow waters (0-30m) surrounding Raoul Island to complement the biodiversity records from the deeper ocean collected by the other scientists onboard.
Mesopelagic trawl from the RV Tangaroa October 2016 Kermadec Voyage
Using a very wide net to complete a 960m deep mesopelagic trawl near the Kermadec Islands has brought up a large number and diverse range of deep water species.
The Quota Management System, which some say saved New Zealand fisheries, is 30 years old today. The system is founded on science that studies fish biology, abundance and distribution, and estimates how many can be caught and still keep the population healthy.

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All staff working on this subject

Hydro-ecological Modeller
Principal Scientist - Fisheries
Population Modeller
Principal Scientist - Fisheries
Assistant Regional Manager - Christchurch
Fisheries Acoustics Scientist
Fisheries Data Manager
Principal Scientist - Fisheries
Principal Scientist - Fisheries
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Principal Technician - Fisheries
Freshwater Fish Ecologist
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Marine Ecology Technician
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Principal Technician - Fisheries
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Environmental Scientist
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