The giant grouper (''Epinephelus lanceolatus''), also known as the Queensland grouper, brindle grouper or mottled-brown sea bass, is a species of marine
ray-finned fish, a
grouper from the
subfamily Epinephelinae which is part of the
family
Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...
Serranidae, which also includes the
anthias
Anthias are members of the family Serranidae and make up the subfamily Anthiinae. Anthias make up a sizeable portion of the population of pink, orange, and yellow reef fishes seen swarming in most coral reef photography and film. The name An ...
and sea basses. It has a wide
Indo-Pacific distribution and is one of the largest extant species of
bony fish.
Description
The giant grouper has a robust body which has a
standard length equivalent to 2.4 to 3.4 times its depth. The dorsal profile of the head and the intraorbital area are convex, The propercle has a rounded corner and a finely serrated margin. The gill cover has a convex upper margin.
There are 11 spines and 14-16 soft rays in the
dorsal fin while the
anal fin
Fins are distinctive anatomical features composed of bony spines or rays protruding from the body of a fish. They are covered with skin and joined together either in a webbed fashion, as seen in most bony fish, or similar to a flipper, as s ...
has 3 spines and 8 soft rays.
[ The ]caudal fin
Fins are distinctive anatomical features composed of bony spines or rays protruding from the body of a fish. They are covered with skin and joined together either in a webbed fashion, as seen in most bony fish, or similar to a flipper, as s ...
is slightly rounded. There are 54 to 62 scales in its lateral line.[ The adults are grayish-brown in colour overlain with a mottled pattern and with darker fins. The small juveniles are yellow with wide, dark irregular bars and irregular dark spots on their fins.] The giant grouper can grow to huge size with the maximum recorded standard length being , although they are more common around , and a maximum published weight of .[
]
Distribution
The giant grouper has a wide Indo-Pacific distribution, it is the most widely distributed species of grouper in the world. It occurs from the Red Sea
The Red Sea ( ar, البحر الأحمر - بحر القلزم, translit=Modern: al-Baḥr al-ʾAḥmar, Medieval: Baḥr al-Qulzum; or ; Coptic: ⲫⲓⲟⲙ ⲛ̀ϩⲁϩ ''Phiom Enhah'' or ⲫⲓⲟⲙ ⲛ̀ϣⲁⲣⲓ ''Phiom ǹšari''; ...
and the eastern coasts of Africa as far south as Algoa Bay in South Africa and across the Indian Ocean into the Western Pacific Ocean as far east as the Pitcairn Islands
The Pitcairn Islands (; Pitkern: '), officially the Pitcairn, Henderson, Ducie and Oeno Islands, is a group of four volcanic islands in the southern Pacific Ocean that form the sole British Overseas Territory in the Pacific Ocean. The four i ...
and Hawaii
Hawaii ( ; haw, Hawaii or ) is a state in the Western United States, located in the Pacific Ocean about from the U.S. mainland. It is the only U.S. state outside North America, the only state that is an archipelago, and the only ...
. They occur as far north as southern Japan and as far south as Australia. In Australia it is found from Rottnest Island in Western Australia
Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to ...
north and east along the tropical coasts of Australia, including offshore reefs, and then south along the eastern coast to Woy Woy, New South Wales. It also occurs around Christmas Island
Christmas Island, officially the Territory of Christmas Island, is an Australian external territory comprising the island of the same name. It is located in the Indian Ocean, around south of Java and Sumatra and around north-west of the ...
and Cocos (Keeling) Islands and the Elizabeth and Middleton Reefs Marine National Park Reserve in the Tasman Sea
The Tasman Sea ( Māori: ''Te Tai-o-Rēhua'', ) is a marginal sea of the South Pacific Ocean, situated between Australia and New Zealand. It measures about across and about from north to south. The sea was named after the Dutch explorer ...
. There have also been reports from the Younghusband Peninsula in South Australia
South Australia (commonly abbreviated as SA) is a state in the southern central part of Australia. It covers some of the most arid parts of the country. With a total land area of , it is the fourth-largest of Australia's states and territories ...
[ and north eastern New Zealand.] It is absent from the Persian Gulf
The Persian Gulf ( fa, خلیج فارس, translit=xalij-e fârs, lit=Gulf of Fars, ), sometimes called the ( ar, اَلْخَلِيْجُ ٱلْعَرَبِيُّ, Al-Khalīj al-ˁArabī), is a mediterranean sea in Western Asia. The bo ...
[ but it is present off the coast of Pakistan and southern Oman.] It has been listed as a potential invasive species in the Bahamas but its presence in that region requires verification.[
]
Habitat and biology
The giant grouper is a species of shallow water and can be found at depths of . It is associated with reefs and is the largest known bony fish found on reefs. Large specimens have been caught from shore and in harbours.[ They are found in caves and in wrecks while the secretive juveniles occur in reefs and are infrequently observed.][ The adults are mainly solitary and hold territories on the outer reef and in lagoons. They have also been caught in turbid water over silt or mud sea beds by prawn fishermen.] The giant grouper is an opportunistic ambush predator which feeds on a variety of fishes, as well as small sharks, juvenile sea turtles, crustaceans and molluscs which are all swallowed whole. Fish which inhabit coral reefs and rocky areas favour spiny lobster
Spiny lobsters, also known as langustas, langouste, or rock lobsters, are a family (Palinuridae) of about 60 species of achelate crustaceans, in the Decapoda Reptantia. Spiny lobsters are also, especially in Australia, New Zealand, Ireland, S ...
s as prey and a specimen taken off Maui in Hawaii had a stomach contents of two spiny lobsters and a number of crabs. Fish living in estuarine environments in South Africa were found to be feeding almost exclusively on the crab '' Scylla serrata''.[ This species is normally solitary and long-lived. They are, however, curious and frequently approach divers closely. They are not generally considered dangerous to humans but divers are advised to treat large specimens with caution and not to hand feed them.][
]
Reproduction
Like most groupers, giant groupers are protogynous hermaphrodites. They spawn on a lunar cycle, with spawns lasting about 7 days. They are aggregative broadcast spawners, usually with several females per male. Studies in captive populations suggest that the dominant male and female begin the spawning event as nearly the only spawners for the first day or two, but other members of the aggregation fertilize more eggs as the event progresses, with even the most recently turned males fathering offspring. Giant groupers are diandric protogynous hermaphrodites, meaning that although some males develop from reproductively functional females other males start to produce sperm without ever having gone through a phase as a reproductive female.
Taxonomy
The giant grouper was first formally described as ''Holocentras lanceolatus'' in 1790 by the German medical doctor and naturalist Marcus Elieser Bloch (1723–1799) with the type locality
Type locality may refer to:
* Type locality (biology)
* Type locality (geology)
See also
* Local (disambiguation)
* Locality (disambiguation)
{{disambiguation ...
given as the East Indies
The East Indies (or simply the Indies), is a term used in historical narratives of the Age of Discovery. The Indies refers to various lands in the East or the Eastern hemisphere, particularly the islands and mainlands found in and aroun ...
. Felipe Poey assigned the giant and goliath groupers (''Epinephelus itajara
The Atlantic goliath grouper or itajara (''Epinephelus itajara''), formerly known as the jewfish, is a saltwater fish of the grouper family and one of the largest species of bony fish. The species can be found in the west ranging from northeaste ...
'' and '' E. quinquefasciatus'', which was then regarded as a synonym
A synonym is a word, morpheme, or phrase that means exactly or nearly the same as another word, morpheme, or phrase in a given language. For example, in the English language, the words ''begin'', ''start'', ''commence'', and ''initiate'' are al ...
of ''E itajara'') to the genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...
''Promicrops'' but in 1972 this was designated as a subgenus of ''Epinephelus
''Epinephelus'' is a genus of marine ray-finned fish, groupers from the subfamily Epinephelinae, part of the family Serranidae, which also includes the anthias and sea basses. They are predatory fish, largely associated with reefs and are found ...
''. However, these species are still each other's closest relatives.[
]
Utilisation
The giant grouper is a highly valued food fish and is taken by both commercial and recreational fisheries. As well as the consumption of its flesh its skin, gall bladder and stomach are used in Traditional Chinese Medicine
Traditional Chinese medicine (TCM) is an alternative medicine, alternative medical practice drawn from traditional medicine in China. It has been described as "fraught with pseudoscience", with the majority of its treatments having no logica ...
. It is valued in Hong Kong as a live fish for the live reef food fish trade, especially smaller specimens. This species is cultured in mariculture and this practice is widespread but there is a restricted supply of juveniles, although hatcheries in Taiwan have produced captive bred juveniles, exporting some for to be grown on in other parts of South-East Asia.[ Many of the fish produced in ]aquaculture
Aquaculture (less commonly spelled aquiculture), also known as aquafarming, is the controlled cultivation ("farming") of aquatic organisms such as fish, crustaceans, mollusks, algae and other organisms of value such as aquatic plants (e.g. lotus ...
are hybrids between this species and '' E. fuscoguttatus''.
Cultural references
The first fish to undergo chemotherapy
Chemotherapy (often abbreviated to chemo and sometimes CTX or CTx) is a type of cancer treatment that uses one or more anti-cancer drugs (chemotherapeutic agents or alkylating agents) as part of a standardized chemotherapy regimen. Chemothe ...
was Bubba, a giant grouper at the Shedd Aquarium in Chicago
(''City in a Garden''); I Will
, image_map =
, map_caption = Interactive Map of Chicago
, coordinates =
, coordinates_footnotes =
, subdivision_type = List of sovereign states, Count ...
.
References
External links
''Epinephelus lanceolatus''
on the Integrated Taxonomic Information System
Queensland Groper, ''Epinephelus lanceolatus''
from the Australian Museum
*
{{Taxonbar, from=Q847747
giant grouper
Fish of the Indian Ocean
Fish of the Pacific Ocean
Fish of Hawaii
giant grouper