Russian Federation country information

Common names: Amerikanskiy ozerno-rechnoi sig, Pygmy whitefish
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: In 1989, it was reported in the Amguema basin, in Ekityki, Bezymyannoe, Gol'tsovoe and Ravkergygytgyn lakes (Ref. 26334). nEurRus
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/rs.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Reshetnikov, Y.S., N.G. Bogutskaya, E.D. Vasil'eva, E.A. Dorofeeva, A.M. Naseka, O.A. Popova, K.A. Savvaitova, V.G. Sideleva and L.I. Sokolov, 1997
National Database:

Common names from other countries

Brownback whitefish, Ménomini pygmée, Amerikanskiy ozerno-rechnoi sig, ... more

Classification / Names Populärnamn | synonymer | Catalog of Fishes(Släkte, Arter) | ITIS | CoL | WoRMS | Cloffa

> Salmoniformes (Salmons) > Salmonidae (Salmonids) > Coregoninae
Etymology: Prosopium: Greek, prosopon = face (Ref. 45335); coulterii: Named after Dr. J.M. Coulter, a distinguished botanist..
More on authors: Eigenmann & Eigenmann.

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

; sötvatten bentopelagisk; djupintervall 18 - 168 m (Ref. 27547), usually 55 - 70 m (Ref. 1998). Temperate; 59°N - 47°N

Utbredning Länder | FAO områden | Ekosystem | Förekomster | Point map | Utplanteringar | Faunafri

North America: three disjunct areas: Lake Superior in Ontario, Canada and Michigan, USA; Yukon River drainage in Yukon, Canada to Columbia River drainage in western Montana and Washington, USA; and Chignik, Naknek and Wood River drainages in southwest Alaska. Europe: Russia (Ref. 26334).

Size / Vikt / Age

Maturity: L_m ? range ? - ? cm
Max length : 28.0 cm TL hane/ej könsbestämd; (Ref. 5723); common length : 11.5 cm TL hane/ej könsbestämd; (Ref. 12193); rapporterad maxålder: 9 år (Ref. 10320)

Short description Bestämningsnycklar | Morfologi | Morfometri

Taggstrålar i ryggfenan (totalt) : 0; Mjukstrålar i ryggfenan (totalt) : 10 - 13; Taggstrålar i analfenan: 0; Mjukstrålar i analfenan: 10 - 14; Ryggkotor: 49 - 55. Body elongate, almost cylindrical. Head elongate, its length slightly greater than body depth; eye relatively large, its diameter greater than snout length; snout bluntly rounded, overhanging mouth, not obviously pointed, a single flap of skin present between nostrils. Nuptial tubercles developed in both males and females, but more conspicuous in males, and occur on top of head, on scales on back and sides, and on paired fins. Body is brownish above, silvery on sides and white below. Dorsal, caudal, and pectoral fins usually clear, anal and pelvic whitish and immaculate, a faint dark spot sometimes present on base of caudal fin. A series of 12 - 14 similar spots present along the midline of the back, and 7 - 14 dark, round or oval parr marks with diffuse borders present along the lateral line of young and sub adults, although some Alaskan forms retain parr marks even on largest fish.

Inhabits lakes and rivers of mountainous areas (Ref. 1998). Feeds mainly on crustaceans and aquatic insect larvae (Ref. 1998). Minimum depth reported from Ref. 1998.

Life cycle and mating behavior Maturities | Reproduktion | Spawnings | Egg(s) | Fecundities | Larver

Moves to spawning grounds in the early winter and presumably back into deeper water after spawning. Spawns at night, presumably the eggs are broadcast, settling into interstices in the gravel. Hatching occurs the following spring (Ref. 27547).

Main reference Upload your references | referenser | Koordinator | Medarbetare

Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723)

IUCN Red List Status (Ref. 130435)

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Prosopium coulterii (Eigenmann & Eigenmann, 1892)