Classification / Names
Populärnamn | synonymer | Catalog of Fishes(Släkte, Arter) | ITIS | CoL | WoRMS | Cloffa
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Cypriniformes (Carps) >
Danionidae (Danios) > Danioninae
Etymology: hema: Name from Sanskrit term for gold, referring to the golden hue of live specimens; noun in apposition..
Environment: milieu / climate zone / depth range / distribution range
Ekologi
; sötvatten bentopelagisk. Tropical
Asia: Sri Lanka.
Size / Vikt / Age
Maturity: Lm ? range ? - ? cm
Max length : 5.6 cm SL hane/ej könsbestämd; (Ref. 127713)
Short description
Morfologi | Morfometri
This species is distinguished from its congeners by the following set of characters: a danionine notch formed by a strong anterior curvature of dentary; branched pelvic-fin rays 6; lateral line complete, perforated scales 33-35; circumpeduncular scales 12-14; predorsal scales 18-21; branched anal-fin rays usually 18 1/2 - 20 1/2 (rarely 17 1/2 or 22 1/2); scales in transverse line 1/2 6 - 1/2 7 + 1 + 2 1/2; branched dorsal-fin rays modally 8 1/2 (rarely 7 1/2 or 9 1/2) ; cleithral spot small, rounded, its greatest dimension less than eye diameter; lower jaw with dense neuromast fields; a rudimentary maxillary barbel present; and no distinct vertical bands in body (Ref. 127713).
Occurs mainly from the headwaters of the Gal basin in the Kotagama and Nilgala areas (194-294 m asl), with a single specimen collected from the headwaters of Hepola stream in Bibile, which drains to the Mahaweli River. Observed in streams and rivers, usually in groups of 5-10 individuals, close to the banks and occupying the upper level of the water column. Cyprinids commonly encountered with this species were Rasbora dandia, R. cf. microcephalus, Devario malabaricus, Dawkinsia singhala, Puntius bimaculatus, and P. dorsalis
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver
Sudasinghe, H., R. Pethiyagoda and M. Meegaskumbura, 2020. A molecular phylogeny of the genus Laubuka (Teleostei: Cyprinidae) in Sri Lanka reveals multiple origins and a cryptic species. Systematics and Biodiversity 18(6):592-613 [1-22].
[First published online, pp. 1-22, 18 June 2020.] (Ref. 127713)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Ytterligare information
PopulärnamnsynonymerMetabolikPredatorerEkotoxikologiReproduktionKönsmognadLekSpawning aggregationFecundityÄggEgg development
Age/SizeTillväxtLength-weightLength-lengthLength-frequenciesMorfometriMorfologiLarverLarvdynamikRekryteringAbundansBRUVS
referenserVattenbrukVattenbruksprofilAvelslinjerGenetikElectrophoresesÄrftlighetSjukdomarBehandlingNutrientsMass conversion
MedarbetareBilderStamps, Coins Misc.LjudCiguateraHastighetSimsättGälytaOtolithsHjärnstorlekSyn
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Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Trofisk nivå (Ref.
69278): 3.1 ±0.3 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
