Humpback red snapper

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Humpback red snapper
Paddletail melb aquarium.jpg
adult
Humpback snapper, juvenile (Lutjanus gibbus) (43709448002).jpg
juvenile
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Lutjanidae
Genus: Lutjanus
Species:
L. gibbus
Binomial name
Lutjanus gibbus
(Forsskål, 1775)
Synonyms [2]
  • Sciaena gibbaForsskål, 1775
  • Diacope lineata Quoy & Gaimard, 1824
  • Diacope borensis G. Cuvier, 1828
  • Diacope coccineaG. Cuvier, 1828
  • Lutjanus coccineus(G. Cuvier, 1828)
  • Diacope striataG. Cuvier, 1828
  • Diacope rosea Valenciennes, 1830
  • Diacope axillarisValenciennes, 1830
  • Diacope tiea Lesson, 1831
  • Diacope melanura Rüppell, 1838
  • Mesoprion janthinurus Bleeker, 1854
  • Genyoroge bidens W. J. Macleay, 1882
  • Lutianus tahitiensis Seale, 1906
  • Anthias heraldi L. P. Schultz, 1953
  • Lutjanus comoriensis Fourmanoir, 1957

The humpback red snapper (Lutjanus gibbus), the paddletail, paddletail snapper or hunchback snapper, is a species of marine ray-finned fish, a snapper belonging to the family Lutjanidae. It has a wide Indo-West Pacific distribution. It is a commercially important species, as well as being sought after as a game fish. It is also a popular species for display in public aquaria. It has been reported to cause ciguatera poisoning.

Contents

Taxonomy

The Humpback red snapper was first formally described in 1775 as Sciaena gibba by the Swedish speaking Finnish born explorer and naturalist Peter Forsskål with the type locality given as the Red Sea. [3] The specific name, gibbus means "humpbacked", a reference to high, steep dorsal profile on the head of the adults. [4]

Description

Humpback red snapper has a body which is relatively with a standard length which is 2.2 to 2.5 times its depth, with a head which has a very steeply sloped forehead a well developed known and notch in the preoperculum. The vomerine teeth are arranged in a crescent shaped patch with no rearwards extension and the tongue is smooth, lacking any teeth. [5] The dorsal fin has 10 spines and 13-14 soft rays while the anal fin contains 3 spines and 8 soft rays. [2] The rear part of the dorsal and anal fins are pointed in shape. The pectoral fins contain 16 to 17 rays [5] and the caudal fin is forked with rounded lobes. [6] This fish attains a maximum total length of 50 cm (20 in), although 45 cm (18 in) is more typical. [2] The overall colour of this snapper is red or grey, darker on back and upper head. There is an orange tint on the lower part of gill cover and on the axil of the pectoral fin. The fins may be red but the median fins are normally dark brown to blackish with the soft-rayed part of the dorsal fin, the anal fin and the caudal fin having a thin white margin. The juveniles have a sizeable circular black spot at base of caudal fin. [5]

Distribution and habitat

Lutjanus gibbus ha a wide Indo-West Pacific distribution. It ranges from the eastern African coast and the Red Sea to the Society and Line islands and from Australia in the south to southern Japan in the north. It has also been recorded from the Marquesas and south to Rapa Iti. [1] In Australia it is found from Houtman Abrolhos to the Dampier Archipelago and reefs off the northern coast of Western Australia, the Ashmore Reef in the Timor Sea the on the eastern coast from the outer Great Barrier Reef and Coral Sea reefs south to Moreton Bay in Queensland with juveniles occurring south to Sydney. [7] The humpback red snapper occurs at depths from 1 to 150 m (3 ft 3 in to 492 ft 2 in). It is associated with reefs and during the day gathers in large, mostly stationary aggregations on coral reefs. The juveniles shelter in beds of sea grass in protected areas of Sandy and muddy substrates, while the aggregations are dominated by subadults. The larger adults inhabit deeper waters on coastal slopes. [1]

Biology

The humpback red snapper feeds on fishes and invertebrates, such as shrimps, crabs, lobsters, stomatopods, cephalopods, echinoderms and ophiuroids. Off East Africa most spawning takes place during the spring and summer. [1] Sexual maturity occurs at two and a half years old and they form spawning aggregations. [7]

Fisheries

The humpback red snapper catch in 2010 was estimated at 3,100 t (3,100 long tons; 3,400 short tons), of which 2,500 t (2,500 long tons; 2,800 short tons) are unreported. It is an important species for fisheries in Japan. It is taken mostly using handlines, traps, spearfishing, and gill nets. It is a common item in fish markets, normally being sold as fresh fish. In the Pacific part of its range consumption of this species has been linked to ciguatera poisoning. [1]

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References

  1. 1 2 3 4 5 Russell, B.; Smith-Vaniz, W.F.; Lawrence, A.; Carpenter, K.E.; Myers, R. (2016). "Lutjanus gibbus". IUCN Red List of Threatened Species . 2016: e.T194385A2328128. doi: 10.2305/IUCN.UK.2016-3.RLTS.T194385A2328128.en . Retrieved 19 November 2021.
  2. 1 2 3 Froese, Rainer; Pauly, Daniel (eds.) (2006). "Lutjanus gibbus" in FishBase. February 2006 version.
  3. ↑ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Lutjanus". Catalog of Fishes . California Academy of Sciences . Retrieved 11 June 2021.
  4. ↑ Christopher Scharpf and Kenneth J. Lazara, eds. (5 January 2021). "Order LUTJANIFORMES: Families HAEMULIDAE and LUTJANIDAE". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 9 June 2021.
  5. 1 2 3 Gerald R. Allen (1985). FAO species catalogue Vol.6. Snappers of the world An annotated and illustrated catalogue of lutjanid species known to date (PDF). FAO Rome. pp. 84–85. ISBN   92-5-102321-2.
  6. ↑ "Lutjanus gibbus". Reef Life Survey. Retrieved 11 June 2021.
  7. 1 2 Bray, D.J. (2018). "Lutjanus gibbus". Fishes of Australia. Museums Victoria. Retrieved 11 Jun 2021.
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