Fish

Latest news

A giant squid and several glow-in-the-dark sharks were surprise finds for NIWA scientists last month on the Chatham Rise during a voyage to survey hoki, New Zealand’s most valuable commercial fish species.
Ever wondered what fish is served in a Filet-o-Fish at MacDonald’s? It’s hoki. Fish fingers at the supermarket? Chances are, they’ll be hoki too.
If you want a healthy fishing industry, you need to know how healthy your fish stocks are. Sam Fraser-Baxter talks to a scientist who went to sea to find out.
Tiny, translucent eels may hold the answers to one of the fish world’s great mysteries. Zen Gregor investigates.

Our work

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 supporting the advancement of the New Zealand aquaculture sector through the development of high value products of verifiable quality and sustainability.
The New Zealand Fish Passage Guidelines sets out recommended practice for the design of instream infrastructure to provide for fish passage.

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.

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 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.

Scientific records of at least 104,000 samples of New Zealand’s freshwater fish, invertebrates, algae and other aquatic plants are now available at the click of a mouse.

A technique that collects chemical ‘fingerprints’ from the ear bones of fish to help scientists identify which estuaries they originated from could have important implications for the management of New Zealand’s local fisheries, said an article in the latest issue of Fisheries & Aquaculture Update, published by NIWA’s National Centre for Fisheries and Aquaculture.

If you hook yourself a tagged blue cod, NIWA would like to hear from you.

New tags that are attached by a tough nylon thread could finally solve the mystery of where New Zealand‘s freshwater eels spawn.

The same technique used to create the frighteningly life-like dinosaurs in the BBC documentary 'Walking with Dinosaurs' is now being used to help monitor New Zealand’s fish populations.

An agreement in principle has been reached for the sale of the Glenariffe Salmon Hatchery currently owned by NIWA, to Rakaia Salmon Limited. The new company wishes to raise salmon for the market by using the hatchery raceways. Initial concerns by environmental groups over potential capture of young salmon for the farm from the Rakaia River will not be an issue.

The abundance and sizes of fish within the Kapiti Marine Reserve have impressed research divers who have just completed a survey to assess how well the marine environment has recovered since it was protected in 1992.

French researchers are now, or soon to be, closely involved in a range of New Zealand environmental and marine studies taking in such diverse activities as migratory problems of fish including eels, the foraging habits of royal albatross in southern oceans, and the potential tsunami impact of undersea landslides.

Crayfish living along the Abel Tasman National Park coastline will be introduced to the silicon chip age later this month.

New findings by scientists at the National Institute of Water and Atmospheric Research (NIWA) have revealed that the death of kina, starfish, and possibly other fishes, in late January and early February off the Kaikoura coast appears to be linked to toxic algae.

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All staff working on this subject

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