分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的; 非遷移的. 溫帶; 61°N - 41°N
North America: Atlantic, Great Lakes, Hudson Bay, and upper Mississippi, Missouri and Peace-Mackenzie River drainages, from Nova Scotia west to Northwest Territories and British Columbia in Canada; south to northern Pennsylvania, Wisconsin and Nebraska in USA. Isolated population in South Platte River system in Colorado, USA.
北美洲: 大西洋，五大湖，哈得遜灣，密西西比河上游, 密蘇里與和平-麥肯茲河流域從新斯科舍省西至西北地區與加拿大卑詩省; 南至賓州北部，威斯康辛州，內布拉斯加與美國科羅拉多州。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 8.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 86798); common length : 4.8 cm TL 雄魚/尚未辨別雌雄; (Ref. 12193); 最大年齡: 3.00 年 (Ref. 12193)
Chrosomus eos is distinguished from a similar species C. erythrogaster by having more rounded, shorter (about equal to eye diameter) snout and more upturned mouth, with chin in front of upper lip. Other characters useful to identify this species include 70-90 lateral scales and red or yellow belly, head, and fins in large males (Ref. 86798).
Inhabits lakes, ponds, bogs, and pools of headwaters and creeks. Usually occurs over silt, often near vegetation (Ref. 86798). Feeds mainly on algae, but also on zooplankton and aquatic insects. Preyed upon by fishes, kingfishers and mergansers (Ref. 1998). Spawning occurs in spring or early summer (Ref. 1998). Used as bait in parts of Ontario and Quebec (Ref. 1998).
棲息於河源上游與小溪的湖，池塘，沼澤與水池。 通常發生在淤泥, 時常在植物的附近。 主要吃藻類, 也捕食浮游動物與水生昆蟲.(參考文獻 1998) 在春天或初夏產卵。 (參考文獻 1998) 被魚，魚狗與秋沙鴨捕食了。 (參考文獻 1998) 在安大略省與魁北克的部份中當作魚餌了。 (參考文獻 1998)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
A female attracts a few males with her darting movements. Together, the group dives into a mass of filamentous algae and release sperm and nonadhesive eggs. The group spawns in several algal masses.北美洲: 大西洋，五大湖，哈得遜灣，密西西比河上游, 密蘇里與和平-麥肯茲河流域從新斯科舍省西至西北地區與加拿大卑詩省; 南至賓州北部，威斯康辛州，內布拉斯加與美國科羅拉多州。
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)
無危 (LC) ; Date assessed: 03 November 2011
人類使用
漁業: 商業性; 水族館: 公眾的水族館; 誘餌: occasionally
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5078 [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 (Ref.
69278): 2.5 ±0.1 se; based on diet studies.
Generation time: 1.0 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
回復力 (Ref.
120179): 高度, 族群倍增時間少於 15個月 (tmax=3).
Fishing Vulnerability (Ref.
59153): Low vulnerability (12 of 100).
