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Cypriniformes (Carps) >
Xenocyprididae (East Asian minnows)
Etymology: longinasus: The specific epithet, used as a noun in apposition, is derived from the Latin longus (long) and nasus (snout), alluding to the presence of a long snout (length greater than eye diameter) compared with all other congeners.
Eponymy: Dr Charles William Metz (1889–1975) was an American zoologist, geneticist and taxonomist whose doctorate was awarded by Stanford University. He co-wrote: A catalog of the fishes known from the waters of Korea (1913). (Ref. 128868), visit book page.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce pelagico. Tropical
Asia: China. Known exclusively from the Hongshui-He River of the Pearl River drainage at Du’an County, Guangxi Province, South China (Ref. 80361).
Dimensione / Peso / Età
Maturità: Lm ?  range ? - ? cm
Max length : 12.9 cm SL maschio/sesso non determinato; (Ref. 104754)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Raggi anali molli: 13 - 14; Vertebre: 40 - 41. A species of Metzia with a superior mouth, 43 or 44 lateral-line scales, a long snout (length 31.7–37.0% of HL); a long head (length 27.2–30.8% of SL), 10 or 11 branched anal-fin rays, and absence of a longitudinal black band extending along each side of body from extremity of gill opening to caudal-fin base.
Body shape (shape guide): fusiform / normal; Cross section: compressed.
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Gan, X., J.-H. Lan and E. Zhang, 2009. Metzia longinasus, a new cyprinid species (Teleostei: Cypriniformes) from the Pearl River drainage in Guangxi Province, South China. Ichthyol. Res. 56:55-61. (Ref. 80361)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio.
82804): PD
50 = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00851 (0.00402 - 0.01800), b=3.09 (2.92 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Livello trofico (Fonte Biblio.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Resilienza (Fonte Biblio.
120179): Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).
Vulnerabilità della pesca (Ref.
59153): Low vulnerability (10 of 100).
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