How to catch Hapuku wreckfish
Polyprion oxygeneios (Schneider & Forster, 1801)
About Hapuku wreckfish fishing
The hapuku wreckfish is a powerful demersal predator belonging to the family Polyprionidae, easily recognised by its robust fusiform body, large head, protruding lower jaw, and a powerful square-shaped tail. Growing up to 160 centimetres in total length and reaching 100 kilograms, juveniles typically display a bluish hue before transitioning to a slate grey body with silvery white underbellies as they adopt a bottom-dwelling existence. Inhabiting deep temperate and subtropical waters from 50 to over 850 metres, this species thrives around rugged rocky structures, deep seamounts, and subterranean caves. As voracious hunters, they feed heavily on various bottom-dwelling fish, crustaceans, and cephalopods. Spawning occurs during the warmer summer months across deep oceanic shelves, making them a formidable and heavy-fighting target for specialist deepwater anglers.
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Difficulty
Medium
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Average size
100 cm TL
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Market value
Low
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Habitat
Saltwater
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Season
Spring, Summer, Autumn, Winter
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Also known as
Blue cod, Deepwater rock cod, Groper, Grouper, Hapuka, Hapuku
Truncate caudal fin
More or less truncate tail shape distinguishes this wreckfish species.
Thoracic pelvic fin
Pelvic fins located in the thoracic position below the pectoral base.
Rough head ridges
Prominent serrated ridges on the gill cover and head bones.
Hapuku wreckfish fishing facts
Characteristics
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Typical size
100 cm TL (max 160 cm TL ) -
Typical weight
15 kg (max 100 kg ) -
Preferred temperature
8.6–16 °C -
Depth
50–854 m -
Longevity
60 years -
Body shape
Fusiform / Normal -
Commercial?
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Vulnerability score
59.4
Best hours
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Peak
Dawn
First light
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Active
Morning
After sunrise
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Low
Midday
High sun
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Active
Afternoon
Late day
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Peak
Dusk
Last light
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Active
Night
After dark
When to fish for Hapuku wreckfish
How to catch Hapuku wreckfish
Tips for catching Hapuku wreckfish
Targeting this heavy-duty wreckfish requires robust heavy-tackle gear capable of plumbing depths well beyond one hundred metres around steep rocky drop-offs, wrecks, and rugged seamount structures. Anglers predominantly rely on heavy bottom-fishing rigs baited with fresh oily fish chunks or squid, as well as vertical metal jigs worked aggressively near the seabed to trigger aggressive strike responses from lurking specimens. Because these fish inhabit low-light deepwater environments, dawn and dusk periods often yield better feeding activity, though daytime drops directly over structured bottom contours remain productive. Prepare for a punishing heavyweight battle immediately upon hook-up, as large individuals will instantly dive back into sharp underwater caverns to attempt cutting your line.
Other names for Hapuku wreckfish
Local and alternate names anglers use for Hapuku wreckfish.
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Hapuku wreckfish
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Whapuku
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Sea bass
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New Zealand groper
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Hapuku
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Hapuka
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Grouper
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Groper
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Deepwater rock cod
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Blue cod
Best equipment to catch Hapuku wreckfish
Compare fishing methods for Hapuku wreckfish — sized kit for each technique.
Note: Typical fish is 15 kg Our algorithm will suggest the best equipment for you based on this weight.
Bottom Fishing
Presenting bait or rigs on or near the lake or sea floor.
90% Effectiveness
Rod
Spinning rod
A spinning rod is a fishing rod built to carry a spinning reel under the blank. You cast lures and light baits with it from shore or a boat.
Sized for a typical fish
extra-heavy · 2.18 m
- Reel seat
- Spinning
- Form factor
- Multi-piece
- Action
- Fast
- Grip
- EVA
Reel
Spinning reel
A spinning reel hangs under the fishing rod and is the default reel for casting lures and light baits. Line peels off an open spool with a bail.
Sized for a typical fish
30000 · 30 kg drag · 1107 g
- Spool
- Fixed
- Mount
- Under
- Drag
- Front
- Retrieve
- Manual
Line
Monofilament line
Monofilament fishing line is the everyday main line: easy to knot, cheap to replace, and stretchy enough to forgive a hard strike.
Sized for a typical fish
91 kg · 1.4 mm
- Visibility
- Medium
- Abrasion
- Medium
- Stretch
- High
- Sink rate
- Slow
Leader
Fluorocarbon leader
A fluorocarbon leader is the clear, fast-sinking join between a visible main line and the lure or hook.
Sized for a typical fish
136.1 kg · 1.885 mm · 180 cm
- Visibility
- Very low
- Abrasion
- High
- Stretch
- Low
- Sink rate
- Fast
Hook
Circle hook
A circle hook turns in the mouth and usually finds the corner of the jaw. You do not strike hard — you come tight. It includes freshwater.
Sized for a typical fish
6/0
- Points
- 1
- Offset
- No
- Barbed
- Yes
- Gap
- Standard
Jigging
Working vertical lures with an active up-and-down motion.
85% Effectiveness
Rod
Jigging rod
A jigging rod is the short, powerful fishing rod for working a metal jig up through the column, including freshwater jigging.
Sized for a typical fish
extra-heavy · 1.83 m
- Reel seat
- Casting
- Form factor
- One-piece
- Action
- Fast
- Grip
- EVA
Reel
Jigging reel
A jigging reel is a compact, high-speed conventional for working metal jigs. A short retrieve picks up slack fast.
Sized for a typical fish
15 · 14 kg drag
- Spool
- Revolving
- Mount
- Over
- Drag
- Star
- Retrieve
- Manual
Line
Braided line
Braided fishing line is the thin, no-stretch main for long casts, jigging, and feeling every tick on the retrieve.
Sized for a typical fish
36.3 kg · 0.43 mm
- Visibility
- High
- Abrasion
- Low
- Stretch
- None
- Sink rate
- Floats
Leader
Fluorocarbon leader
A fluorocarbon leader is the clear, fast-sinking join between a visible main line and the lure or hook.
Sized for a typical fish
36.3 kg · 0.847 mm · 150 cm
- Visibility
- Very low
- Abrasion
- High
- Stretch
- Low
- Sink rate
- Fast
Drift Fishing
Presenting bait or lures from a boat moving with wind or current, not under trolling speed.
70% Effectiveness
Rod
Boat rod
A boat rod is the short, stout fishing rod for work under the hull: bottom fishing, trolling, drift, and live bait in fresh or salt.
Sized for a typical fish
heavy · 2.29 m
- Reel seat
- Casting
- Form factor
- One-piece
- Action
- Moderate-fast
- Grip
- EVA
Reel
Conventional reel
A conventional reel is the lever-drag boat fishing reel for trolling and bottom fishing.
Sized for a typical fish
30 · 18 kg drag
- Spool
- Revolving
- Mount
- Over
- Drag
- Lever
- Retrieve
- Manual
Line
Braided line
Braided fishing line is the thin, no-stretch main for long casts, jigging, and feeling every tick on the retrieve.
Sized for a typical fish
36.3 kg · 0.43 mm
- Visibility
- High
- Abrasion
- Low
- Stretch
- None
- Sink rate
- Floats
Hook
Circle hook
A circle hook turns in the mouth and usually finds the corner of the jaw. You do not strike hard — you come tight. It includes freshwater.
Sized for a typical fish
6/0
- Points
- 1
- Offset
- No
- Barbed
- Yes
- Gap
- Standard
Best lures and baits for Hapuku wreckfish
Ranked lures and natural baits from every method, best first.
01
Squid
- Bottom Fishing
- Jigging
Elongated muscular body holds internal organs and secretes scent in the water.
02
Inchiku
- Bottom Fishing
A slider-head jig with an octopus skirt for deep saltwater.
03
Mackerel
- Bottom Fishing
Distinctive wavy dorsal stripes provide high contrast and flash underwater.
04
Metal jig
- Jigging
A long metal lure for speed-jigging the deep column.
05
Slow pitch jig
- Jigging
A flat-sided jig built for slow-pitch jigging.
06
Sardine
- Drift Fishing
Elongated silvery baitfish body releases strong scent trails.
How Hapuku wreckfish migrates — Bathymetric
Shifts between shallow and deeper water with the seasons rather than moving along the coast. Change depth before you change venue.
1 Warm months
Shallow water
Feed in shallow water through the warm months.
2 Cold months
Deep water
Drop into deeper water as it cools.
Larger adults often stay deeper all year.
Hover or tap a number to read each stage.
Diet and behavior of Hapuku wreckfish
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Diet
Top predator -
Feeds by
Hunts animals -
Hunts
Dawn · Dusk -
Feeds over
Soft bottom -
Main prey
Baitfish
Prey and predators of Hapuku wreckfish
Prey is what Hapuku wreckfish eats. Predators are the animals that eat it.
That is how it feeds, and how it is hunted.
Prey
What it eats
Baitfish
Predators
What hunts it
Mammals
Where Hapuku wreckfish lives
Lives on or just above the bottom. Work jigs, bait, and lures along the seabed.
50–854 m
Where this species lives
Hapuku wreckfish photos for identification
Compare these photos with the catalog plate to identify the species.
Where to fish for Hapuku wreckfish
Mapped fishing spots where Hapuku wreckfish is recorded — open a pin for access and methods.
