Classification / Names
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Cypriniformes (Carps) >
Cyprinidae (Minnows or carps) > Labeoninae
Etymology: Mekongina: From the Mekong river; lancangensis: Named for the type locality, Lancang, the name of the Chinese reach of the upper Mekong River.
More on authors: Yang, Chen & Yang.
Environment: milieu / climate zone / depth range / distribution range
Ekologi
; sötvatten pelagiska. Tropical
Asia: China.
Size / Vikt / Age
Maturity: Lm ? range ? - ? cm
Max length : 5.8 cm SL hane/ej könsbestämd; (Ref. 79744)
Short description
Bestämningsnycklar | Morfologi | Morfometri
Mekongina lancangensis can be distinguished from M. erythrospila by
having one pair of rostral barbels (v. no barbels); two rows of tubercles irregularly
scattered on the snout and cheeks, with two enlarged tubercles present at each side of the anterior of the snout (v. four rows of tubercles in M. erythrospila); 19–27 rostral marginal lappets (v. 18–21); 38–41 lateral line
scales (v. 34–37); 18–20 circumpeduncular scales (v. 16); 5.5 or 6.5 scales in transverse series from dorsal-fin origin to lateral line (D-LL) scales (v. 7 or 7.5); shorter snout length (SN) (31.9–36.9% LH v. 38.6–57.8) and longer anal
fin (tip of the depressed rays reaching the base of the caudal fin v. not reaching the base of the caudal fin) (Ref. 79744).
This species was found syntopic with Bangana lippus (Fowler, 1936) during the early flood season, where both share similar body shape and size, as well as a black blotch on the base of the caudal fin. Mekongina lancangensis is readily distinguished from B. lippus in having a rostral cap split into 19-27 papillate lappets (vs. rostral cap smooth) and upper lip degenerated and is discontinuous from the lower lip (vs. upper lip developed, continuous with lower lip) (Ref. 79744).
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver
Yang, J., X.Y. Chen and J.X. Yang, 2008. A new species of the genus Mekongina Fowler, 1937 (Cypriniformes: Cyprinidae) from South China. J. Fish Biol. 73(8):2005-2011. (Ref. 79744)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
Verktyg
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00933 (0.00305 - 0.02858), b=3.01 (2.76 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Resiliens (Ref.
120179): Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
