分類 / Names
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Teleostei >
Cypriniformes (Carps) >
Leuciscidae (Minnows) > Pogonichthyinae
Etymology: Luxilus: Latin, luxilus, derived from Lux = light, refered to a small silvery fish (Ref. 45335); chrysocephalus: From the words chrysocephalus, meaning golden head, and isolepis, equal scales (referring to the more regular scale pattern) (Ref. 10294).
More on author: Rafinesque.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的. 溫帶; 46°N - 31°N
North America: Great Lakes and Mississippi River basins from western New York and Wisconsin, south to Alabama, Louisiana and eastern Texas, USA; Gulf Coast drainages from Mobile Bay in Georgia and Alabama, to Sabine River in Louisiana, USA. Introduced to Escambia River system in Florida and Alabama.
北美洲: 來自紐約西部與東南方的威斯康辛州的五大湖與密西西比河流域, 南至阿拉巴馬州，路易斯安那與美國德州東部; 對美國路易斯安那州的龐恰特雷恩湖的岸灣流域從美國喬治亞州與阿拉巴馬州的摩比灣。
Length at first maturity / 大小 / 重量 / 年齡
Maturity: Lm 6.7 range ? - ? cm
Max length : 24.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 10294); common length : 8.3 cm TL 雄魚/尚未辨別雌雄; (Ref. 12193); 最大年齡: 4 年 (Ref. 12193)
Inhabits rocky pools near riffles in clear to fairly turbid creeks and small to medium rivers (Ref. 86798). Feeds on terrestrial insects, filamentous and unicellular algae, and a variety of aquatic invertebrate often dominated by mayfly nymphs (Ref. 10294). Oviparous (Ref. 205), nest spawners (Ref. 52559).
在急流的附近成魚棲息於岩石的水池在清澈的對非常混濁的小溪及小型到中型河川;(參考文獻 205) 也發現於溪流。 捕食時常被孚游類蛹控制的陸棲的昆蟲，絲狀而單細胞的藻類與多種水生的無脊椎動物。 (參考文獻 10294) 卵生的 (參考文獻 205), 築巢產卵魚。 (參考文獻 52559)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
北美洲: 來自紐約西部與東南方的威斯康辛州的五大湖與密西西比河流域, 南至阿拉巴馬州，路易斯安那與美國德州東部; 對美國路易斯安那州的龐恰特雷恩湖的岸灣流域從美國喬治亞州與阿拉巴馬州的摩比灣。
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)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00851 (0.00376 - 0.01926), b=3.06 (2.86 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.3 ±0.45 se; based on food items.
Generation time: 2.1 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
回復力 (Ref.
120179): 中等的, 族群倍增時間最少 1.4 - 4.4年 (tm=2; tmax=4).
Fishing Vulnerability (Ref.
59153): Low vulnerability (25 of 100).
