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Teleostei >
Cypriniformes (Carps) >
Leuciscidae (Minnows) > Laviniinae
Etymology: Ptychocheilus: Greek, ptyx, ptychos = fold + Greek, cheilos = lip (Ref. 45335).
More on author: Girard.
Environment: milieu / climate zone / 深度上下限 / distribution range
生態學
; 淡水 居於水底的; 河川洄游 (Ref. 51243). 溫帶; 42°N - 31°N
North America: Colorado River drainage in USA (Wyoming, Colorado, Utah, New Mexico, Arizona, Nevada and California) and Mexico. Now mostly restricted to Utah and Colorado; and extirpated from the southern portion of the range by the construction of large dams.
北美洲: 在懷俄明州，科羅拉多，猶他州，新墨西哥州，亞歷桑那州，內華達州與美國加州與墨西哥的科羅拉多河流域。 現在大部份侷限於猶他州與科羅拉多而且在科羅拉多河與吉拉河上滅絕了從範圍的南方部分藉由大壩建築。
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 180 cm TL 雄魚/尚未辨別雌雄; (Ref. 5723); common length : 52.5 cm TL 雄魚/尚未辨別雌雄; (Ref. 12193); 最大年齡: 12 年 (Ref. 12193)
臀鰭軟條: 9. Scales very small with 76-97, usually 80-87 scales on lateral line and 18-23 scales above lateral line; dorsal fin usually with 9 rays; anal fin with 9 rays (Ref. 86798).
Body shape (shape guide): elongated.
Inhabits pools of medium to large rivers. Large individuals usually occur in deep, flowing rocky or sandy pools (Ref. 86798).
棲息於中型到大型河川的水池。 大的個體通常深地出現在,流動岩石或沙的水池。
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
北美洲: 在懷俄明州，科羅拉多，猶他州，新墨西哥州，亞歷桑那州，內華達州與美國加州與墨西哥的科羅拉多河流域。 現在大部份侷限於猶他州與科羅拉多而且在科羅拉多河與吉拉河上滅絕了從範圍的南方部分藉由大壩建築。
Page, L.M. and B.M. Burr, 2011. A field guide to freshwater fishes of North America north of Mexico. Boston : Houghton Mifflin Harcourt, 663p. (Ref. 86798)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-1)
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Estimates based on models
Phylogenetic diversity index (參考文獻
82804): PD
50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
營養階層 (參考文獻
69278): 2.0 ±0.2 se; based on size and trophs of closest relatives
回復力 (參考文獻
120179): 低的, 最小族群倍增時間4.5 - 14 年 (tmax=12).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).
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