White sucker

White sucker; Temporal range: Early Pleistocene to recent
Conservation status
	; Least Concern (IUCN 3.1)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Cypriniformes
Family:	Catostomidae
Genus:	Catostomus
Species:	C. commersonii
Binomial name
	Catostomus commersonii; (Lacépède, 1803)
	Distribution in the United States (also occurs in Canada)
Synonyms
	List Cyprinus commersonnii ; Lacepède, 1803; Cyprinus teres ; Mitchill, 1814; Catostomus bostoniensis ; Lesueur, 1817; Catostomus communis ; Lesueur, 1817; Catostomus flexuosus ; Rafinesque, 1820; Cyprinus reticulatus ; Richardson, 1836; Catostomus gracilis ; Kirtland, 1838; Catostomus pallidus ; DeKay, 1842; Catostomus sucklii ; Girard, 1856; Catostomus chloropteron ; Abbott, 1860; Catostomus alticolus ; Cope, 1874; Moxostoma trisignatum ; Cope, 1875; Catostomus richardsoni ; Harper & Nichols, 1919; ;

The white sucker (Catostomus commersonii) is a species of freshwater cypriniform fish inhabiting the upper Midwest and Northeast in North America, but it is also found as far south as Georgia and as far west as New Mexico. The fish is commonly known as a "sucker" due to its fleshy, papillose lips that suck up organic matter and aufwuchs from the bottom of rivers and streams.

Other common names for the white sucker include bay fish, brook sucker, common sucker, and mullet. The white sucker is often confused with the longnose sucker (C. catostomus), because they look very similar.