Longfin grouper

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Longfin grouper

Least Concern  (IUCN 3.1)[1]
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Serranidae
Subfamily: Epinephelinae
Genus: Epinephelus
Species:
E. quoyanus
Binomial name
Epinephelus quoyanus
(Valenciennes, 1830)
Synonyms[2]
  • Serranus quoyanus Valenciennes, 1830
  • Serranus gilberti Richardson, 1842
  • Epinephelus gilberti (Richardson, 1842)
  • Serranus megachir Richardson, 1846
  • Cephalopholis megachir (Richardson, 1846)
  • Epinephelus megachir (Richardson, 1846)
  • Serranus pardalis Bleeker, 1848
  • Perca melanocelidota Gronow, 1854
  • Serranus carinatus Alleyne & Macleay, 1877
  • Serranus alatus Alleyne & Macleay, 1877

The longfin grouper (Epinephelus quoyanus), also known as the longfin rockcod, bar-breasted rock-cod, Gilbert's rock-cod, honeycomb rockcod, spotted groper or wirenet cod, is a species of marine

Western Pacific Ocean
.

Description

The longfin grouper has a body with a

pectoral fin
and almost join at the gill slitcreating an isolated pale patch on the ventral part of the breast and there is another pale area between the upper dark and a dark blotch that normally covers most of the base of the pectoral fin. There are irregular dark brown bands and blotches on the throat and the ventral surface of the breast., The dark spots on the head are smaller towards the snout but these are always notably larger than the nostrils, and there is a squarish white or pale area on the cheek at rear end of the upper jaw. The rear margin of pectoral, anal and caudal fins is mostly dusky with faint dark spots while the front margin leading edge of pelvic fins with white line and broad blackish submarginal band.[3] This species attains a maximum total length of 40 centimetres (16 in).[2]

Distribution

The longfin grouper is found in the Indo-West Pacific, especially in the

Indomalayan region. In the Indian Ocean it has only been recorded from the Andaman Islands and off Australia. In the Western Pacific Ocean its range extends from Japan and South Korea in the north south to Australia and east as far as the Solomon Islands.[1] In Australia, it is distributed from Shark Bay in Western Australia along the northern coast and as far south as northern New South Wales, including the islands of the Great Barrier Reef.[3]

Habitat and biology

The longfin grouper is found on silty reefs in coastal waters at depths of less than 50 metres (160 ft).

protogynous hermaphrodite and the females become sexually mature at around 24 centimetres (9.4 in) and when they are 1.8 years old. The change in sex to males takes place when they have attained a total length of around 33 centimetres (13 in).[1] The long and fleshy pectoral fins appear to be used to support the fish's body as it rests on the substrate.[3]

Taxonomy

The longfin grouper was first formally

anatomist Jean René Constant Quoy (1790-1869) who, with Joseph Paul Gaimard, reported this species.[5]

Utilisation

The longfin grouper is of some value to fisheries in Hong Kong and Taiwan, occurring in the live reef fish food markets of Hong Kong and probably on other regions of southeast Asia.

gill nets, hand-lines and traps. Once caught the wild hatched juveniles are grown-out in cages in southeast Asia, albeit on a small scale.[1]

References

  1. ^
    doi:10.2305/IUCN.UK.2018-2.RLTS.T132799A100556717.en
    . Retrieved 19 November 2021.
  2. ^ a b c d Froese, Rainer; Pauly, Daniel (eds.) (2019). "Epinephelus quoyanus" in FishBase. December 2019 version.
  3. ^
    ISBN 92-5-103125-8
    .
  4. ^ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Serranus quoyanus". Catalog of Fishes. California Academy of Sciences. Retrieved 14 July 2020.
  5. ^ G. Cuvier & A. Valenciennes (1830). Histoire naturelle des poissons. Tome Sixième. Livre sixième. Partie I. Des Sparoïdes; Partie II. Des Ménides. v. 6 (in French).

External links

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