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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.

Environment: milieu / climate zone / depth range / distribution range Ökologie

; süßwasser pelagisch. Tropical

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Asia: China. Known exclusively from the Hongshui-He River of the Pearl River drainage at Du’an County, Guangxi Province, South China (Ref. 80361).

Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 12.9 cm SL Männchen/unbestimmt; (Ref. 104754)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Afterflossenweichstrahlen: 13 - 14; Wirbelzahl: 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.

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

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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)

IUCN Rote Liste Status (Ref. 130435: Version 2024-2)

Gefährdung zunehmend (NT) (B1a+2a); Date assessed: 22 August 2023

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00871 (0.00412 - 0.01842), b=3.09 (2.92 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.2 ±0.4 se; based on size and trophs of closest relatives

Widerstandsfähigkeit (Ref. 120179): hoch, Verdopplung der Population dauert weniger als 15 Monate. (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Metzia longinasus Gan, Lan & Zhang, 2009