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Couesius plumbeus (Agassiz, 1850)

Lake chub
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Couesius plumbeus
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United States (contiguous states) country information

Common names: Lake chub, Lake chub
Occurrence: native
Salinity: freshwater
Abundance: common (usually seen) | Ref: Page, L.M. and B.M. Burr, 2011
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Found throughout most of extreme northern USA; south to Delaware River in New York, Lake Chigan in Illinois, and Platte River system in Wyoming. Relict populations in the upper Missouri River drainage in South Dakota, Nebraska, Colorado and Wyoming, and Twin Spings Creek (Mississippi River tributary) in Iowa (Ref. 86798). Also Ref. 1998, 5723.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/us.html
National Fisheries Authority: http://www.nmfs.gov
Occurrences: Occurrences Point map
Main Ref: Page, L.M. and B.M. Burr, 2011
National Database:

Common names from other countries

Классификация / Names народные названия | синонимы | Catalog of Fishes(род, виды) | ITIS | CoL | WoRMS | Cloffa

> Cypriniformes (Carps) > Leuciscidae (Minnows) > Plagopterinae
Etymology: Couesius: From the American ornithologist Eliot Coues of the US Army Medical Coprs (Ref. 45335).
  More on author: Agassiz.

Environment: milieu / climate zone / depth range / distribution range экология

; пресноводный демерсальный; pH range: 6.5 - 7.8; немигрирующий.   Temperate; 4°C - 25°C (Ref. 12468); 66°N - 40°N

распространение страны | регионы FAO | Ecosystems | места находок | Point map | интродукции | Faunafri

North America: Alaska (Yukon River drainage); throughout most of Canada and northern USA; south to Delaware River in New York, south end of Lake Michigan, Illinois, Platte River system in Colorado, and Columbia River drainage in Washington, USA. Relict population in Mississippi River basin in Iowa, USA. Sometimes hybridizes with Rhinichthys cataractae in Lake Superior (Ref. 4564).

Length at first maturity / Size / Вес / Возраст

Maturity: Lm 8.6  range ? - ? cm
Max length : 23.0 cm TL самец/пол неопределен; (Ref. 86798); common length : 10.5 cm TL самец/пол неопределен; (Ref. 12193); наибольший возраст (опубликованны данные): 5 годы (Ref. 12193)

Краткое описание определительные ключи | морфология | морфометрия

колючие лучи спинного плавника (общее число) : 0; членистые (мягкие) лучи спинного плавника (общее число) : 8; колючие лучи анального плавника: 0; членистые (мягкие) лучи анального плавника: 7 - 9; позвонки: 39 - 44. Couesius plumbeus is distinguished by having the following characters: barbel at corner of large, barely subterminal mouth; moderately pointed snout; large eye; head flattened above and below; dorsal fin origin over or slightly behind pelvic fin origin; complete lateral line, 53-70 lateral scales; 8 anal rays, and pharyngeal teeth 2,4-4,2 (Ref. 86798). Spineless fins, normal jaws, and tiny barbel at the corner of the mouth (Ref. 27547). Body moderately compressed and slender, coloration include brown to green above, dark stripe along silver gray side, darkest on young and large male, sometimes black specks on side and belly, dusky caudal spot. Large male may have red at pectoral and pelvic fin origins, corners of mouth (Ref. 86797). In some populations, breeding males develop bright orange-red patches on sides of head and at bases of pectoral fins, but the presence of this color varies from place to place (Ref. 27547).

биология     глоссарий (например epibenthic)

Inhabits virtually any body of water, standing or flowing, large or small (Ref. 5723, 86798). Common in gravel-bottomed pools and runs of streams and along rocky lake margins (Ref. 86798). Mostly found in shallow water, but may move to deeper parts of lakes during hot weather (Ref. 27547). Feeds on zooplankton, algae, terrestrial and aquatic insects, and small fishes (Ref. 1998).

Life cycle and mating behavior Maturities | размножение | Spawnings | Egg(s) | Fecundities | личинки

Spawning individuals form schools that move from lakes or deeper parts of streams to shallower water (Ref. 27547). Also Ref. 10280.

Основная ссылка Upload your references | ссылки | координатор | соавторы

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)

Статус Красного Списка МСОП (Ref. 130435)

  Не вызывающий беспокойства (LC) ; Date assessed: 11 November 2011

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Угроза для людей

  Harmless




Использование человеком

рыболовство: коммерческий; аквариум: общественные аквариумы; наживка: occasionally
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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01023 (0.00544 - 0.01925), b=3.00 (2.82 - 3.18), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trophic level (Ref. 69278):  3.4   ±0.43 se; based on food items.
устойчивость к внешним воздействиям (Ref. 120179):  средний (среднего размера), минимальное время удвоения популяции 1.4-4.4 года (tm=2-4; tmax=5; K=0.36).
Fishing Vulnerability (Ref. 59153):  Low to moderate vulnerability (31 of 100).
Категория цены (Ref. 80766):   Unknown.