This article is about the fish genus. For other uses, see Labeo (disambiguation).
Labeo
orangefin labeo (Labeo calbasu)
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Class:
Actinopterygii
Order:
Cypriniformes
Family:
Cyprinidae
Subfamily:
Labeoninae
Genus:
Labeo Cuvier, 1816
Type species
Cyprinus niloticus
Forsskål, 1775
Species
See text
Synonyms[1]
Abrostomus Smith, 1841
Chrysophekadion Bleeker, 1860
Morulius Hamilton, 1822
Rohita Valenciennes in Cuvier & Valenciennes, 1842
Rohitichthys Bleeker, 1860
Labeo is a genus of carps in the family Cyprinidae. They are found in freshwater habitats in the tropics and subtropics of Africa and Asia.
It contains the typical labeos in the subfamily Labeoninae, which may not be a valid group, however, and is often included in the Cyprininae as tribe Labeonini. If the Labeoninae are accepted as distinct, Labeonini is the name of the tribe in this subfamily to which the labeos belong. If the Labeonini are considered a tribe of the Cyprininae, the labeos are placed in subtribe Labeoina.
The labeos appear fairly similar to the "freshwater sharks" of the genus Epalzeorhynchos, which is also part of the Labeoninae (or Labeonini), but is not very closely related. Labeos are larger, and have a more spindle-shaped body, as they are mostly free-swimming rather than benthic like Epalzeorhynchos. Their mouths look very different, too; they have a pronounced rostral cap, which covers the upper lip except when feeding. The lips are expanded into thick, sausage-shaped pads which have keratinized edges. Thus, their mouth parts are moderately apomorphic; not as little-developed as in barbs or in Epalzeorhynchos, but neither as extensive as in, for example, Garra or Ptychidio.[2] The genus name Labeo is Latin for "one who has large lips".[3]
Labeos have the two barbels on the rostrum which are common among the Cyprinidae, and also another pair of barbels at the rear edges of the lower maxilla, which has been lost in some of their relatives. They have a well-developed vomeropalatine organ. In the Weberian apparatus, the posterior supraneural bone is elongated and contacts the skull at the forward end.[2]
^Bailly, Nicolas (2014). "Labeo Cuvier, 1816". WoRMS. World Register of Marine Species. Retrieved 24 September 2023.
^ abStiassny, M. L. and A. Getahun. (2007). An overview of labeonin relationships and the phylogenetic placement of the Afro-Asian genus Garra Hamilton, 1922 (Teleostei: Cyprinidae), with the description of five new species of Garra from Ethiopia, and a key to all African species. Zoological Journal of the Linnean Society 150(1), 41–83.
^Christopher Scharpf & Kenneth J. Lazara (7 September 2023). "Family CYPRINIDAE: Subfamily LABEONINAE Bleeker 1859 (Labeos)". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 24 September 2023.
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