The Nonindigenous Occurrences section of the NAS species profiles has a new structure. The section is now dynamically updated from the NAS database to ensure that it contains the most current and accurate information. Occurrences are summarized in Table 1, alphabetically by state, with years of earliest and most recent observations, and the tally and names of drainages where the species was observed. The table contains hyperlinks to collections tables of specimens based on the states, years, and drainages selected. References to specimens that were not obtained through sighting reports and personal communications are found through the hyperlink in the Table 1 caption or through the individual specimens linked in the collections tables.

Hypentelium roanokense
Hypentelium roanokense
(Roanoke Hog Sucker)
Native Transplant

Copyright Info
Hypentelium roanokense Raney and Lachner, 1947

Common name: Roanoke Hog Sucker

Taxonomy: available through www.itis.govITIS logo

Identification: Hypentelium roanokense is superficially similar to the two other species of Hypentelium, but can generally be distinguished by a combination of color pattern and counts of lateral line scales and pectoral fin elements (Page and Burr 2011).

Size: to 16 cm (Page and Burr 2011)

Native Range: Endemic to the middle and upper Roanoke-Dan River system, North Carolina and Virginia (Raney and Lachner 1947; Page and Burr 2011)

Native range data for this species provided in part by NatureServe NS logo
Hydrologic Unit Codes (HUCs) Explained
Interactive maps: Point Distribution Maps

Nonindigenous Occurrences:

Table 1. States with nonindigenous occurrences, the earliest and latest observations in each state, and the tally and names of HUCs with observations†. Names and dates are hyperlinked to their relevant specimen records. The list of references for all nonindigenous occurrences of Hypentelium roanokense are found here.

StateFirst ObservedLast ObservedTotal HUCs with observations†HUCs with observations†
NC196420162Roanoke Rapids; Upper Yadkin
VA200920091Upper Yadkin

Table last updated 4/17/2024

† Populations may not be currently present.

Means of Introduction: Likely bait bucket introduction (Tracy et al. 2013).

Status: Established in North Carolina and Virginia

Impact of Introduction: The impacts of this species are currently unknown, as no studies have been done to determine how it has affected ecosystems in the invaded range. The absence of data does not equate to lack of effects. It does, however, mean that research is required to evaluate effects before conclusions can be made.

References: (click for full references)

Raney, E.C., and E.A. Lachner. 1947. Hypentelium roanokense, a new catostomid fish from the Roanoke River in Virginia. American Museum Novitates 1333:1-15. http://hdl.handle.net/2246/4207.

Page, L.M., and B.M. Burr. 2011. Peterson field guide to freshwater fishes of North America north of Mexico. 2nd edition. Houghton Mifflin Harcourt, Boston, MA.

Tracy, B.H., R.E. Jenkins, and W.C. Starnes. 2013. History of fish investigations in the Yadkin-Pee Dee River drainage of North Carolina and Virginia with an analysis of nonindigenous species and invasion dynamics of three species of suckers (Catostomidae). Journal of the North Carolina Academy of Science 129(3):82-106.

Other Resources:
FishBase Summary

Author: Neilson, M.E.

Revision Date: 6/29/2023

Peer Review Date: 11/5/2013

Citation Information:
Neilson, M.E., 2024, Hypentelium roanokense Raney and Lachner, 1947: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?speciesID=2905, Revision Date: 6/29/2023, Peer Review Date: 11/5/2013, Access Date: 4/18/2024

This information is preliminary or provisional and is subject to revision. It is being provided to meet the need for timely best science. The information has not received final approval by the U.S. Geological Survey (USGS) and is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the information.


The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2024]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [4/18/2024].

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For general information and questions about the database, contact Wesley Daniel. For problems and technical issues, contact Matthew Neilson.