News
SpeciesScientists Discover Mysterious New Fish in the Red Sea – and Have Never Seen It AgainOceanEye to eye with Britain's hidden sharks at SharkAdemy - OceanographicRiversIn October, biologists surveying a New York harbor for invasive fish pulled up a bright yellow one. It wasn't an invasive species at allOceanShedd Aquarium Sends Shark Eggs to Bolster Wild PopulationsSpeciesA rare fish has been found in Lake Ontario, North America, whose entire body is golden. It is a nati..OceanThe Great Sea Reef Is Fiji’s Wildest Dive, and a New Frontier for ConservationOceanEckerd College professor contributes to designating Biscayne Bay an Important Shark and Ray AreaSpeciesRio Verde Grande Survey Identifies Fifty-Three Fish Species Facing Flow ReductionsFisheriesAdams River Salmon Run in Thompson-NicolaIndiaHilsa production dropped 26% in five years, fisheries minister tells parliamentSpeciesScientists Discover Mysterious New Fish in the Red Sea – and Have Never Seen It AgainOceanEye to eye with Britain's hidden sharks at SharkAdemy - OceanographicRiversIn October, biologists surveying a New York harbor for invasive fish pulled up a bright yellow one. It wasn't an invasive species at allOceanShedd Aquarium Sends Shark Eggs to Bolster Wild PopulationsSpeciesA rare fish has been found in Lake Ontario, North America, whose entire body is golden. It is a nati..OceanThe Great Sea Reef Is Fiji’s Wildest Dive, and a New Frontier for ConservationOceanEckerd College professor contributes to designating Biscayne Bay an Important Shark and Ray AreaSpeciesRio Verde Grande Survey Identifies Fifty-Three Fish Species Facing Flow ReductionsFisheriesAdams River Salmon Run in Thompson-NicolaIndiaHilsa production dropped 26% in five years, fisheries minister tells parliament
EveryFish
Western Blue Groper, from lateral.

Western blue groper

Large, long-lived wrasse from southern Australian reefs.

Photo: Fishes3Mitchell1850.jpg : W. Mitchell derivative work: Belchi ( talk ), Public domain, via Wikimedia Commons

The western blue groper is a large wrasse found in rocky coastal waters of southern Australia. It can live for seventy years and grows to 175 cm. This species faces local depletion and has varying levels of legal protection across different states.

Share on WhatsApp

  • Lives up to 70 years, among the longest for wrasses.
  • Grows to 175 cm and weighs up to 40 kg.
  • Feeds on hard-shelled prey like abalone and crabs.
  • Fully protected in Victorian waters.
  • Native to rocky reefs of southern Australia.

What it is

The western blue groper is a substantial member of the wrasse family. It features thick fleshy lips, heavy scales and peg-like teeth suited for crushing hard prey. The body ends in a large squarish tail and supports a single long-based dorsal fin. Adults can reach lengths of 175 cm and weigh up to 40 kg. Its robust build allows it to dominate rocky reef environments along the southern coast of Australia.

Where it lives

This fish inhabits coastal waters from the Houtman Abrolhos in Western Australia to areas west of Melbourne. It prefers habitats with rocky substrates where it can find shelter and food. Individuals are found at depths ranging from one metre down to 65 metres. The species is native to these southern Australian regions and relies on the complex structure of reef systems for its daily survival and territorial behaviour.

How it lives

As a top order territorial bony fish on rocky reefs, it plays a key ecological role. Its diet includes other fishes, crabs, lobster and various molluscs such as abalone. It also consumes starfish. The western blue groper is notable for its exceptional longevity, with records showing individuals living up to 70 years. This makes it one of the longest lived wrasse species known, sharing this trait with the foxfish.

Western blue groper
A drawing made by EveryFish from what this page says. It is a diagram, not a picture of the real fish.

Fish and people

Local commercial fisheries consider this species of minor importance. However, recreational line and spear fishers do catch it occasionally. In South Australia and Western Australia, anglers may keep one fish per day outside specific closed zones. Victoria offers full protection in its waters. Conservationists argue that broader state-wide protection is necessary because mature adults have become rare in some gulfs, suggesting functional extinction in certain areas.

Status and threats

Experts highlight that mature adults are now rare in Spencer Gulf and the species may be functionally extinct in Gulf Saint Vincent. While protected in specific South Australian gulfs and fully in Victoria, scientists urge higher priority for full protection. They note its status as a top territorial reef fish makes its decline ecologically significant. Current measures include spatial closures and daily bag limits in some states.

Western blue groper m Achoerodus gouldii at North Cove, Bald Island, Western Australia
Western blue groper m Achoerodus gouldii at North Cove, Bald Island, Western Australia. Photo: Pbsouthwood, CC BY-SA 3.0, via Wikimedia Commons
The Range of the Blue Groper Blue = Western Blue Groper ( Achoerodus gouldii ) Red = Eastern Blue Groper ( Achoerodus viridis )
The Range of the Blue Groper Blue = Western Blue Groper ( Achoerodus gouldii ) Red = Eastern Blue Groper ( Achoerodus vi. Photo: Nrg800, CC BY-SA 3.0, via Wikimedia Commons
Achoerodus gouldii Western blue groper at North Cove, Bald Island, Western Australia
Achoerodus gouldii Western blue groper at North Cove, Bald Island, Western Australia. Photo: Peter Southwood, CC BY-SA 3.0, via Wikimedia Commons
Western blue groper Achoerodus gouldii at Seal cove, Breaksea Island, in King George Sound, Western Australia
Western blue groper Achoerodus gouldii at Seal cove, Breaksea Island, in King George Sound, Western Australia. Photo: Peter Southwood, CC BY-SA 3.0, via Wikimedia Commons

Questions people ask about Western blue groper

How big does the western blue groper get?

This species grows to a maximum length of 175 cm. Recorded weights reach up to 40 kg. It is a large and heavy fish with thick scales and a robust body shape typical of dominant reef dwellers.

Is it safe to eat western blue groper?

It is caught by recreational fishers and has minor commercial value. Regulations vary by state, with daily limits in South Australia and Western Australia but full protection in Victoria. Check local rules before keeping any catch.

Where can I find western blue groper?

They live in coastal waters of southern Australia. Their range extends from the Houtman Abrolhos in Western Australia to west of Melbourne. They prefer rocky substrates at depths between one and 65 metres.

Good reading and sources

Where this page comes from

The facts on this page come from the Wikipedia article "Achoerodus gouldii", 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.

Like Western blue groper

All other fish
WorldRoundscale spearfish Atlantic billfish often mistaken for white marlinOther · Open ocean · 1841 🇯🇵 Japan and 2 moreAyu sweetfish Small amphidromous fish prized for its sweet flesh in East Asia.Other · Rivers and lakes · 1846 🇺🇸 United StatesAtlantic tarpon Large, acrobatic saltwater game fish of the Atlantic.Other · Coasts and shelves · 1847 🇦🇺 Australia and 1 moreYellowtail amberjack Large pelagic fish of the Southern Hemisphere oceansOther · Coasts and shelves · 1833

More from Labridae

All of them
WorldSix-line wrasse Small violet reef fish with six orange stripesReef fish · Coasts and shelves · 1857 🇲🇾 Malaysia and 4 moreHumphead wrasse The largest reef-dwelling wrasse, known for its forehead hump and endangered status.Reef fish · Coasts and shelves · 1801 OceaniaBluestreak cleaner wrasse A small reef fish that cleans parasites from larger marine animals.Reef fish · Coral reefs WorldBluehead wrasse A small Atlantic reef fish known for changing sex and colour.Other · Coral reefs

Photo credits on this page

The small pictures above come from Wikimedia Commons under free licences. Some are cropped to fit.

The weekly digest

Every Monday: the fish of the day, new pages on EveryFish, and the conferences and anniversaries of the week ahead.