{{Short description|Genus of fishes}} {{Automatic taxobox | name = ''Chasmistes'' | fossil_range = {{fossil range|Pliocene|present}} | image = Chasmistes_brevirostris.png | image_caption = Shortnose sucker | taxon = Chasmistes | authority = D. S. Jordan, 1878<ref name = CofF>{{Cof family|family=Catostomidae|access-date=25 November 2024}}</ref> | type_species = ''Catostomus fecundus'' | type_species_authority = Jordan, 1878<ref name = CofF/> | subdivision_ranks = Species | subdivision = }}
'''''Chasmistes''''' is a genus of ray-finned fish in the family Catostomidae.<ref>{{ITIS |id=163960 |taxon=''Chasmistes'' |access-date=March 7, 2008}}</ref>
They are native to freshwater habitats in the Western United States.
Several species are seriously threatened, and one has become extinct in recent history (a second extinct species has only been known from fossils).
== Characteristics == Members of this genus have a large and stout body, as well as a large head. They often have a hump on their snout. Their mouths are either terminal or subterminal. They have a complete lateral line and a two-chambered gas bladder.<ref>{{Cite book|url=https://books.google.com/books?id=rFTqmdDqn-wC|title=Peterson Field Guide to Freshwater Fishes of North America North of Mexico|last1=Page|first1=Lawrence M.|last2=Burr|first2=Brooks M.|date=2011|publisher=Houghton Mifflin Harcourt|isbn=978-0547242064|pages=305|language=en}}</ref>
==Species== The genus ''Chasmistes'' contains these species:<ref>{{FishBase genus | genus = Chasmistes| month = August | year = 2011}}</ref> * ''Chasmistes brevirostris'' <small>Cope, 1879</small> — shortnose sucker * ''Chasmistes cujus'' <small>Cope, 1883</small> — cui-ui * ''Chasmistes fecundus'' <small>(Cope & Yarrow, 1875)</small> — Webug sucker * ''Chasmistes liorus'' <small>D. S. Jordan, 1878</small> — June sucker ** ''Chasmistes liorus liorus'' <small>D. S. Jordan, 1878</small> ** ''Chasmistes liorus mictus'' <small>R. R. Miller & G. R. Smith, 1981</small> * {{extinct}}''Chasmistes muriei'' <small>R. R. Miller & G. R. Smith, 1981</small> — Snake River sucker ;Fossil species * {{extinct}}''Chasmistes spatulifer'' <small>R. R. Miller & G. R. Smith, 1967</small> (from the Plio-Pleistocene of Idaho)
==References== {{Wikispecies|Chasmistes|''Chasmistes''}} {{Reflist}}
{{Taxonbar|from=Q5087387}} {{Authority control}}
Category:Chasmistes Category:Catostomidae Category:Fish of the Western United States Category:Freshwater fish of the United States Category:Endemic fish of the United States Category:Taxa named by David Starr Jordan Category:Taxonomy articles created by Polbot
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