Identity
Unique IDELEMENT_GLOBAL.2.104770
Element CodeAFCJB31020
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVertebrate Animal
IUCNLeast concern
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomAnimalia
PhylumCraniata
ClassActinopterygii
OrderCypriniformes
FamilyLeuciscidae
GenusChrosomus
SynonymsPhoxinus eos(Cope, 1862)
Other Common NamesVentre rouge du nord (FR)
Concept ReferenceRobins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea, and W.B. Scott. 1991. Common and scientific names of fishes from the United States and Canada. American Fisheries Society, Special Publication 20. 183 pp.
Taxonomic CommentsHybridizes with C. neogaeus (Das and Nelson 1989); hybrids between C. eos and C. neogaeus comprise diploid, triploid, and diploid-triploid mosaic unisexuals; diploids are products of clonal reproduction (Dawley et al. 1987). Aclonal reproduction by polyploids also occurs (Copeia 1993:650-660).
This species formerly was included in the genus Phoxinus. Based on patterns of genetic variation, Strange and Mayden (2009) reassigned all North American Phoxinus species to the genus Chrosomus.
Conservation Status
Rank MethodExpertise without calculation
Review Date2015-08-17
Change Date1996-09-17
Edition Date2011-11-03
Edition AuthorsHammerson, G.
Range Extent200,000-2,500,000 square km (about 80,000-1,000,000 square miles)
Number of Occurrences81 to >300
Range Extent CommentsRange includes Atlantic, Great Lakes, Hudson Bay, upper Mississippi, Missouri, and Peace-Mackenzie river drainages, from Nova Scotia west to Northwest Territories and British Columbia, and south to northern Pennsylvania, Wisconsin, and Nebraska, with an isolated population in the South Platte river system, Colorado (Page and Burr 2011).
Occurrences CommentsThis species is represented by a large number of occurrences (subpopulations).
Threat Impact CommentsNo major threats exist over most of the range. Southern-most population in Colorado has been reduced by stream channelization, reductions in discharge, and changes in water quality; it is now threatened by continued urban development (Bestgen 1989).