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Teleostei >
Cypriniformes (Carps) >
Leuciscidae (Minnows) > Pogonichthyinae
Etymology: Pogonichthys: Greek, pogon = beard + Greek, ichthys = fish (Ref. 45335).
More on author: Ayres.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水; 半鹹淡水 底中水層性. 溫帶; 39°N - 36°N
North America: formerly throughout the Sacramento-San Joaquin River drainage in California, USA; now mostly in San Francisco Bay Delta and lower Sacramento and San Joaquin rivers.
北美洲: 從前在美國加州知道在薩克拉門托河- 聖約昆河的河流域各處; 現在侷限於舊金山海灣三角州與薩克拉門托河河下游。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 44.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 5723); common length : 30.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 12193); 最大年齡: 5 年 (Ref. 72485)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背的軟條 (總數) : 9 - 10. Body long, slender and compressed; dorsal-fin origin in front of pelvic-fin origin; upper lobe of caudal fin longer than lower lobe; barbel at corner of slightly subterminal mouth; scales on lateral line 57-64, usually 60-62; dorsal fin with 9-10 rays; 1st gill arch with 14-18 rakers; pharyngeal teeth 2,5-5,2; olive-gray above, silver gold side; large specimen with hump on nape; and red-orange caudal and paired fins (Ref. 86798).
Inhabits lakes and backwaters and pools of rivers. Tolerant of brackish water (Ref. 5723, 86798).
棲息於河川與湖泊的洄水區與水池。 寬容的半淡鹹水.(參考文獻 5723)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
北美洲: 從前在美國加州知道在薩克拉門托河- 聖約昆河的河流域各處; 現在侷限於舊金山海灣三角州與薩克拉門托河河下游。
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 2024-2)
無危 (LC) ; Date assessed: 20 April 2012
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
營養階層 (Ref.
69278): 2.9 ±0.3 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): Low to moderate vulnerability (34 of 100).
