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Teleostei >
Cypriniformes (Carps) >
Leuciscidae (Minnows) > Pogonichthyinae
Eponymy: Sir John Richardson (1787–1865) was a Scottish naval surgeon, naturalist and Arctic explorer. [...] (Ref. 128868), visit book page.
More on author: Girard.
Environment: milieu / climate zone / 深度上下限 / distribution range
生態學
; 淡水 底中水層性. 溫帶; 42°N - 37°N
North America: Lahontan and other interior basins in northern Nevada and northern California, USA including Humboldt, Walker, Carson, Truckee, Susan, Quinn and Reese River systems; Walker, Tahoe and Pyramid Lakes. Introduced elsewhere, including upper Sacramento River systems in California.
北美洲: 在北部與內華達州西部與美國北加州包括洪堡河， Walker, Carson, Truckee, Susan ， Quinn 與 Reese 河流域中的拉昂坦湖與其他的內部流域; Walker, Tahoe 與金字塔湖; 也在加州聖克里門托河流域上游中, 在哪裡可能地引入。
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 17.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 5723); common length : 7.2 cm TL 雄魚/尚未辨別雌雄; (Ref. 12193); 最大年齡: 5 年 (Ref. 12193)
Distinguished from a similar species Richardsonius balteatus by having less anal rays (8-9, rarely 10), longer snout, more slender body and less slender caudal peduncle (Ref. 86798).
Body shape (shape guide): fusiform / normal.
Occurs in margin of lakes and all types of stream habitats but usually in pools and slow runs (Ref. 86798).
棲息於所有類型的水流棲息地但是常見於水潭與緩慢的水流 , 與湖的邊緣。
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
北美洲: 在北部與內華達州西部與美國北加州包括洪堡河， Walker, Carson, Truckee, Susan ， Quinn 與 Reese 河流域中的拉昂坦湖與其他的內部流域; Walker, Tahoe 與金字塔湖; 也在加州聖克里門托河流域上游中, 在哪裡可能地引入。
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)
無危 (LC) ; Date assessed: 01 March 2012
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Estimates based on models
Phylogenetic diversity index (參考文獻
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00871 (0.00395 - 0.01919), b=3.06 (2.88 - 3.24), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (參考文獻
69278): 2.9 ±0.4 se; based on size and trophs of closest relatives
回復力 (參考文獻
120179): 中等的, 族群倍增時間最少 1.4 - 4.4年 (tmax=5).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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