Fish

Latest news

Some of the first research into how microplastics are affecting New Zealand fish species has revealed that microplastic fragments can find their way through the gut lining and into muscle tissue.
Sadie Mills has come a long way from scaring the inhabitants of Scottish rock pools. Sarah Fraser explains.
A lack of information about New Zealand oceanic shark populations is making it difficult to assess how well they are doing, says a NIWA researcher.
New Zealand’s native fish are doing their best to climb up ramps in a NIWA laboratory so scientists can learn how to better help them navigate our tricky waterways.

Our work

NIWA has a number of projects that are allowing us to better understand the interaction between snapper and their environment over their life cycle.
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.
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.
The New Zealand Fish Passage Guidelines sets out recommended practice for the design of instream infrastructure to provide for fish passage.

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.

Scientists returned to the Nukumea Stream in Orewa last week, to investigate the trial release of giant kōkopu. This is the first controlled trial in New Zealand to test whether the native fish, giant kōkopu, can be successfully stocked into a stream.

Last week NIWA scientists carried out electric fishing and night time spotlight surveys, in the stream; capturing and measuring the fish and recording the locations that they were found in.

NIWA and the Bluff Oyster Management Company have just completed a pre-season survey of the oyster beds in Foveaux Strait.

Havelock Mussel Festival

20 March 2010

Year after year the Havelock Mussel Festival is a huge success, drawing crowds of up to 6000 people.
In 2009 there were a record number of 70 stalls which offered food, wine and beer, crafts and industry displays. This was in conjunction with top kiwi entertainment, lots of fun activities - it really is the festival that brings the whole community together.
In 2010 NIWA will again be taking a Gold Sponsorship of the event, sponsoring the The NIWA Kidzone.

New Zealand’s iconic whitebait species are disappearing from our waterways, but help could soon be at hand for the threatened giant kōkopu.

The giant kōkopu is a native whitebait species considered rare and vulnerable. NIWA is working with Mahurangi Technical Institute and environmental consultancy Boffa Miskell to test the feasibility of reintroducing giant kōkopu to Nukumea Stream, north of Auckland.

Researchers at the National Institute of Water and Atmospheric Research (NIWA) have contributed their findings to a major news release by the Census of Marine Life charting an astonishing abundance, diversity, and distribution of deep-sea species.

Scientists from the UK, Japan and New Zealand have successfully photographed the deepest fish in the southern hemisphere at 7561 metres deep in the Kermadec Trench, just northeast of New Zealand.

Welcome to the first e-newsletter from NIWA's National Centre for Aquaculture & Biotechnology. Here, we'll bring you news of aquaculture and biotechnology research at NIWA, and forthcoming events and workshops.

Using its broad base of capability, NIWA is creating a new aquaculture species for New Zealand - hāpuku - for sale in the world's fine dining sector.

Welcome to the newsletter for NIWA's National Centre for Aquaculture & Biotechnology. Here we'll bring you news of research discoveries, new initiatives, courses, and events in these exciting and commercially-orientated fields.

These guides are designed for rapid identification of freshwater flora and fauna for use in biomonitoring.

Inshore and onshore biodiversity sampling activity is about to commence in the Bay of Islands as the Bay of Islands Ocean Survey 20/20 project enters its next phase.

The kōaro was once abundant in the Te Arawa lakes near Rotorua in New Zealand’s North Island. NIWA has assessed the viability of restoring this species in the region.

In a collaborative study, echosounder surveys of the lower reservoir at ZEALANDIA, the Karori Wildlife Sanctuary, show that electro-fishing and netting have successfully reduced perch numbers in the conservation safe haven.

Learn how to use the New Zealand Freshwater Fish Database (NZFFD)

Journal papers

Clark, M.R, Dunn, M.R., McMillan, P.J., Pinkerton, M.H., Stewart, A., Hanchet, S.M. (2010). Latitudinal variation of demersal fish assemblages in the western Ross Sea. Antarctic Science 22: 782–792.

Dunn, A., Hanchet, S.M. (2010). Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea including data from the 2006–07 season. New Zealand Fisheries Assessment Report 2010/1. 28 p.

There are two main species of toothfish in the Southern Ocean.

  • Patagonian toothfish (Dissostichus eleginoides). The Patagonian toothfish lives in predominantly subantarctic waters and is the target for important fisheries (2,000–5,000 tonnes per year) around South Georgia (Subarea 48.3), Kerguelen Islands (Division 58.5.1) and Heard and McDonald Islands (Division 58.5.2). It is uncommon south of 65°S in the Ross Sea region.

What risk from alien fish?

Koi carp – a high-risk alien species. (Photo: NIWA)

The risk posed by alien fish to our freshwater species and habitats can now be evaluated using a model developed by NIWA scientists. The Freshwater Fish Risk Assessment Model (FRAM) assesses the risk of new alien fish species becoming established in New Zealand, and, importantly, their capacity to damage the environment, giving an overall ‘ecological risk’.
FRAM is powerful and simple to use.

Epic Antarctic voyage complete: analysis begins

Applying the science: didymo

Major port biosecurity surveillance underway

What risk from alien fish?

NIWA is at the forefront of kingfish aquaculture research and is readying for commercial production to capitalise on this potentially lucrative market.

Two fossils discovered in the Ormond Valley, near Gisborne, have been identified as a mysterious extinct native fish, the grayling or upokororo. They represent the first known fossils of New Zealand grayling.

Scientists from NIWA are diving in Waitemata Harbour to establish precisely how far an invasive sea squirt, known as the clubbed tunicate (or Styela clava), has spread.

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All staff working on this subject

Hydro-ecological Modeller
Principal Scientist - Fisheries
Population Modeller
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Principal Scientist - Fisheries Modeller
Assistant Regional Manager - Christchurch
Fisheries Acoustics Scientist
Fisheries Data Manager
Fisheries Scientist
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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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