Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Craniata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Superclassis/Classis: Actinopterygii
Classis/Subclassis: Actinopteri
Subclassis/Infraclassis: Neopterygii
Infraclassis: Teleostei
Megacohors: Osteoglossocephalai
Supercohors: Clupeocephala
Cohors: Euteleosteomorpha
Subcohors: Neoteleostei
Infracohors: Eurypterygia
Sectio: Ctenosquamata
Subsectio: Acanthomorphata
Divisio/Superordo: Acanthopterygii
Subdivisio: Percomorphaceae
Series: Eupercaria
Ordo: Perciformes
Subordo: Percoidei
Superfamilia: Percoidea
Familia: Carangidae
Genus: Alectis
Species: A. alexandrina – A. ciliaris – A. indica
Name
Alectis Rafinesque, 1815
Gender: feminine
Type species: Gallus virescens Lacepède, 1802, by being a replacement name.
References
Rafinesque, C.S. 1815. Analyse de la nature, ou tableau de l'univers et des corps organisés. Palerme: L'Imprimerie de Jean Barravecchia. 224 pp. BHL Reference page.
Alectis – Taxon details on Integrated Taxonomic Information System (ITIS).
Alectis species list in FishBase,
Froese, R. & Pauly, D. (eds.) 2022. FishBase. World Wide Web electronic publication, www.fishbase.org, version 08/2021.
Vernacular names
English: Threadfish, Diamond trevallies
ไทย: ปลาผมนาง, ปลาโฉมนาง
Alectis is a genus of fish in the family Carangidae containing three extant species, all of which are large marine fishes. They are commonly known as threadfish, diamond trevallies or pompanos, although they have no close affiliation with the true pompano genus.
Taxonomy
Alectis is one of 33 genera in the jack and horse mackerel family Carangidae. The Carangidae are ray-finned fishes in the order Carangiformes.[2]
The first fish in the genus to be described was Alectis ciliaris under the genus name of Zeus, part of the dory family. Lacépède recognized the species was not a dory and assigned it to a new genus, Gallus, however this was preoccupied by a bird.[3] In 1815, Rafinesque proposed the name Alectis in an obscure publication. Georges Cuvier used another generic name, Scyris, for the genus in 1829, but the name Alectis was rediscovered by James Douglas Ogilby in 1913 and had priority.[4] The name Alectis is derived from one of three Erinyes in the Greek mythology; daughter of Acheronte with a terrible rage.[5]
A single species has been identified the fossil record, Alectis simus (Stinton, 1979), from the Eocene period of England. It was found alongside a number of extinct and extant carangid genera including Caranx and Usacaranx (extinct).[6]
Species
There are currently three recognized species in this genus:[5]
Image Scientific name Common name Distribution
Alectis-alexandrina.JPG Alectis alexandrina (É. Geoffroy Saint-Hilaire, 1817) Alexandria pompano tropical eastern Atlantic Ocean, inhabiting the waters of West Africa from Morocco around to Angola
Alectis ciliaris.jpg Alectis ciliaris (Bloch, 1787) African pompano east and west coasts of the US, South America and Africa, throughout the Indian Ocean and along Asia and Australia, as well as many islands in the Pacific.
Diamond trevally juvenile.jpg Alectis indica (Ruppell, 1830) Indian threadfish the tropical regions of the Indian and Western Pacific Oceans, ranging from Madagascar, east Africa and the Red Sea to India, China, South East Asia, north to Japan and south to Indonesia and northern Australia
Biology
The fish of the genus are large, powerful fishes that look very similar to a number of other large jacks, with the main difference being the profile of the head and the characteristic long filamentous anal and dorsal fins displayed by juveniles of these species. They are generally a silver colour, with pale green to hyaline fins. A. indica is the largest of the genus, growing to a reported 165 cm and 25 kg in weight.[7]
The genus has a circum-tropical distribution, with adults generally restricted to reefs in coastal areas down to 100 m, while juveniles are often pelagic.[4] All three are predators of small fishes, cephalopods and crustaceans. A little is known of their reproductive habits and larval phases, with spawning occurring during daylight between pairs.[8]
Relationship to humans
The genus is of minor importance to both commercial and subsistence fisheries, with the species generally not numerous enough to warrant a specific fishery.[4] All species are considered fine game fish, attaining large sizes and capable of blistering runs. The flesh of the genus is generally considered very good for culinary purposes, although at least one species has been implicated in a case of Ciguatera poisoning.[9] In Singapore, A. indica has successfully been bred in aquaculture for food production in relatively low numbers. Juveniles are occasionally used in saltwater aquariums, noted for their filamentous anal and dorsal fins.[10]
References
Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology. 363: 1–560. Archived from the original on 2011-07-23. Retrieved 2007-12-31.
J. S. Nelson; T. C. Grande; M. V. H. Wilson (2016). Fishes of the World (5th ed.). Wiley. pp. 380–387. ISBN 978-1-118-34233-6.
Hosese, D.F.; Bray, D.J.; Paxton, J.R.; Alen, G.R. (2007). Zoological Catalogue of Australia Vol. 35 (2) Fishes. Sydney: CSIRO. p. 1150. ISBN 978-0-643-09334-8.
Carpenter, Kent E.; Niem, Volker H., eds. (2001). FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Volume 5. Bony fishes part 3 (Menidae to Pomacentridae) (PDF). Rome: FAO. p. 2684. ISBN 92-5-104587-9.
Froese, Rainer and Pauly, Daniel, eds. (2021). Species of Alectis in FishBase. February 2021 version.
Stinton, F.C. (1979). "Fish Otoliths from the English UK Eocene". Palaeontographical Society Monographs. London. 133 (558): 191–258.
Gunn, John S. (1990). "A revision of selected genera of the family Carangidae (Pisces) from Australian waters". Records of the Australian Museum. Supplement 12: 1–78. doi:10.3853/j.0812-7387.12.1990.92.
von Westernhagen, H. (1974). "Observations on the natural spawning of Alectis indicus (Rüppell) and Caranx ignobilis (Forsk.) (Carangidae)". Journal of Fish Biology. 6 (4): 513–516. doi:10.1111/j.1095-8649.1974.tb04567.x.
Bourdeau, P.; Bagnis, R. (1989). "Facteurs de risque ciguatérique aux Antilles dans la région de Saint-Barthélémy, Saint-Martin et Anguilla" [Risk factors of ciguatera in the French West Indies in Saint-Barthelemy, Saint-Martin and Anguilla]. Revue d'élevage et de médecine vétérinaire des pays tropicaux (in French). 42 (3): 393–410. doi:10.19182/remvt.8799 (inactive 31 October 2021).
Pet education. "Indian threadfin". Fish. Foster & Smith, Inc. Archived from the original on 2006-03-04. Retrieved 2007-10-23.
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