分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Cypriniformes (Carps)
鯉形目 (Carps) >
Catostomidae (Suckers)
亞口魚科 (Suckers) > Catostominae
Etymology: Xyrauchen: Greek, xyreo = that cuts like a knife + Greek, auchen = neck (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的; 河川洄游 (Ref. 51243). 溫帶; 37°N - 34°N
North America: Formerly throughout medium to large rivers of Colorado River basin from Wyoming and Colorado in USA to Baja California in Mexico. Presently known only above Grand Canyon and in Lakes Mead, Mohave and Havasu on lower Colorado River in USA.
北美洲: 在科羅拉多河流域的中型到大型河川各處從前從懷俄明州與科羅拉多在美國到墨西哥的下加利福尼亞。 目前只有在大峽谷之上與在美國的科羅拉多河下游上的米德湖，摩哈維湖與哈瓦蘇湖知道。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 91.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 5723); common length : 50.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 12193)
Occurs in silt-bottomed to rock-bottomed backwaters near strong current and deep pools in medium to large rivers, and impoundments.
出現於淤泥底的到在強的水流附近的岩質底的洄水區在中型到大型河川 , 與圈圍水域中的且深水池。
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
北美洲: 在科羅拉多河流域的中型到大型河川各處從前從懷俄明州與科羅拉多在美國到墨西哥的下加利福尼亞。 目前只有在大峽谷之上與在美國的科羅拉多河下游上的米德湖，摩哈維湖與哈瓦蘇湖知道。
Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-2)
極危 (CR) (A2bce); Date assessed: 12 April 2012
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00525 (0.00220 - 0.01254), b=3.09 (2.88 - 3.30), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 低的, 最小族群倍增時間4.5 - 14 年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): High vulnerability (56 of 100).
