Hāpuku
Large deep-water wreckfish prized for food and aquaculture.
The hāpuku is a large, slow-growing wreckfish found in southern oceans. It lives in deep waters and feeds on other fish and crustaceans. Māori value it as a prestigious traditional food. Modern fisheries manage wild stocks while research institutes develop farming methods.
- Can grow up to 180 cm and weigh 100 kg
- Lives in depths between 10 and 800 metres
- Reaches sexual maturity at 10 to 13 years
- Managed under New Zealand Quota Management System
- NIWA holds the world's largest broodstock resource
What it is
The hāpuku is a large wreckfish with a grey body and silvery white belly. Juveniles often appear blue. It has ten spines on its dorsal fin, rounded anal and pectoral fins, and a powerful square tail. The lower jaw protrudes beyond the upper one. Large eyes help it hunt in low-light conditions. Adults typically weigh around 25 kg but can reach 100 kg. Length varies from 60 cm to 180 cm.
Where it lives
This species inhabits temperate and subtropical zones of the southern Indian and Pacific Oceans. Populations exist near Chile, southeastern Australia, South Africa, Tristan da Cunha, and New Zealand. They live at depths between 10 and 800 metres, though they prefer water deeper than 50 metres. In shallow areas, they hide in cracks, caverns, or caves. Historically found near shores, they now reside mostly in deeper offshore waters.
How it lives
Juveniles live in open water before moving to the sea floor at about 50 cm length. They are voracious predators that eat various fish, including red and blue cod, as well as hoki. Their diet also includes invertebrates like crabs and crayfish. Hāpuku grow slowly and live long lives, reaching up to 60 years. They share their range with the Atlantic wreckfish, their closest relative.
Breeding and life cycle
Sexual maturity occurs late, between 10 and 13 years of age. Research facilities maintain broodstock in controlled tanks to encourage natural spawning. Scientists have developed methods for incubating eggs and feeding larvae. Trials focus on transitioning young fish from live feed to formulated diets. These efforts aim to establish viable farming operations by selecting traits for survival and growth.
Fish and people
Māori consider hāpuku a prestigious traditional food. The name implies cramming food into one’s mouth. Fishers once used the name rarawai to avoid alerting the fish. Commercial fishing began in the 1940s, producing canned meat and liver oil. Today, it commands high market prices. Chefs rate farmed specimens highly. New Zealand manages wild catches through quota systems with daily bag limits.
Status and threats
Wild populations face pressure from overfishing in many areas. New Zealand regulates commercial and recreational catches via the Quota Management System. There are no size restrictions, but anglers may keep only five fish per day. Aquaculture development aims to reduce reliance on wild stocks. Research institutes continue to refine breeding and rearing techniques to support sustainable production.
Questions people ask about Hāpuku
What does hāpuku taste like?
It is considered a highly rated eating fish in the 21st century. Chefs who have tasted farmed hāpuku state that it outperforms wild-caught specimens. It reaches top value on local and international markets due to its quality.
How deep do hāpuku live?
They inhabit waters between 10 and 800 metres deep. However, they generally prefer depths greater than 50 metres. In shallow waters, they are usually found hiding in cracks, caverns, or caves.
Is hāpuku farming successful?
Research institutes have overcome technical complications in hatchery technology. Sea cage and tank trials show considerable growth potential. NIWA aims to make it an important species for New Zealand's aquaculture sector.
Why did Māori use the name rarawai?
Tradition held that the fish could tell when its name was being used. To avoid alerting the hāpuku during fishing expeditions, fishers used the alternative name rarawai instead.
Good reading and sources
The facts on this page come from the Wikipedia article "Hāpuku", written by its contributors and used under the CC BY-SA 4.0 licence, and from its Wikidata record (CC0). EveryFish rewrote the text in its own words, with AI assistance, and compares every page with the article to make sure no passage is copied. It may be reused under the same CC BY-SA 4.0 licence with a link back.
It may contain mistakes, and figures change over time. Nothing here is investment or buying advice. If something is wrong, tell us. Last refreshed 2026-11-15.
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