分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
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
生態學
; 淡水 大洋性.
Asia: China. Known exclusively from the Hongshui-He River of the Pearl River drainage at Du’an County, Guangxi Province, South China (Ref. 80361).
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 12.9 cm SL 雄魚/尚未辨別雌雄; (Ref. 104754)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
臀鰭軟條: 13 - 14; 脊椎骨: 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
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
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 瀕危狀態 (Ref. 130435: Version 2024-2)
近危 (NT) (B1a+2a); Date assessed: 22 August 2023
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 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).
營養階層 (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
