Identity
Unique IDELEMENT_GLOBAL.2.101315
Element CodeAFCJC02210
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVertebrate Animal
IUCNLeast concern
Endemicendemic to a single nation
KingdomAnimalia
PhylumCraniata
ClassActinopterygii
OrderCypriniformes
FamilyCatostomidae
GenusCatostomus
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 CommentsButh et al. (1992) found that Chasmistes cujus and Catostomus tahoensis were diagnostically different for 20 genetic characters; they found no genetic evidence of hybridization in a sample suspected, on the basis of morphology, to be of hybrid origin.
Hybridizes with C. platyrhynchus, the mountain sucker (Lee et al. 1980). See Smith (1992) for a study of the phylogeny and biogeography of the Catostomidae.
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2023-07-18
Change Date2023-07-18
Edition Date2023-07-18
Edition AuthorsHammerson, G. (2011); rev. R. L. Gundy (2023)
Threat ImpactLow
Range Extent20,000-200,000 square km (about 8000-80,000 square miles)
Number of Occurrences21 - 80
Rank ReasonsThis species is somewhat broadly distributed, considered common, and is not subject to any major threats.
Range Extent CommentsThe Tahoe sucker is native to the Lahontan Basin in southeastern Oregon, Nevada, and northeastern California, USA (Page and Burr 2011). Based on specimen records from Global Biodiversity Information Facility and observations from iNaturalist, range extent is estimated to be approximately 168,000 km² (GBIF 2023, GeoCat2023, iNaturalist 2023). It has also been introduced in the upper Sacramento River system, California, but this non-native range was not considered for this range extent estimate (Page and Burr 2011).
Occurrences CommentsThis species is represented by dozens of occurrences (GBIF 2023, iNaturalist 2023).
Threat Impact CommentsThere are no major threats to this species.