Alectis
Genus of fish
title: "Alectis" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["alectis", "caranginae", "extant-eocene-first-appearances", "marine-fish-genera", "ray-finned-fish-genera", "taxa-named-by-constantine-samuel-rafinesque"] description: "Genus of fish" topic_path: "general/alectis" source: "https://en.wikipedia.org/wiki/Alectis" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary Genus of fish ::
| fossil_range =
Eocene to Present
| image = Alectis ciliaris.jpg
| image_caption = juvenile Alectis ciliaris
| taxon = Alectis
| authority = Rafinesque, 1815
| type_species = Alectis ciliaris
(Bloch, 1787)
| synonyms =
- Gallus (Lacépède, 1802)
- Scyris (Cuvier, 1829) | subdivision_ranks = Species | subdivision = See Text
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.
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. 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. The name Alectis is derived from one of three Erinyes in the Greek mythology; daughter of Acheronte with a terrible rage.
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).
Species
There are currently three recognized species in this genus: ::data[format=table]
| Image | Scientific name | Common name | Distribution |
|---|---|---|---|
| [[File:Alectis-alexandrina.JPG | 120px]] | Alectis alexandrina (É. Geoffroy Saint-Hilaire, 1817) | Alexandria pompano |
| [[File:Alectis ciliaris.jpg | 120px]] | Alectis ciliaris (Bloch, 1787) | African pompano |
| [[File:Diamond trevally juvenile.jpg | 120px]] | Alectis indica (Ruppell, 1830) | Indian threadfish |
| :: |
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.
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.
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. 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.
References
References
- Sepkoski, Jack. (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology.
- (2016). "Fishes of the World". Wiley.
- (2007). "Zoological Catalogue of Australia Vol. 35 (2) Fishes". CSIRO.
- (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)". FAO.
- {{FishBase genus. (2021)
- Stinton, F.C.. (1979). "Fish Otoliths from the English UK Eocene". Palaeontographical Society Monographs.
- Gunn, John S.. (1990). "A revision of selected genera of the family Carangidae (Pisces) from Australian waters". Records of the Australian Museum.
- von Westernhagen, H.. (1974). "Observations on the natural spawning of ''Alectis indicus'' (Rüppell) and ''Caranx ignobilis'' (Forsk.) (Carangidae)". Journal of Fish Biology.
- Pet education. "Indian threadfin". Foster & Smith, Inc.
::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::