Disclaimer:

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.

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Common name: Orangefin Madtom

Taxonomy: available through www.itis.gov

Identification: Page and Burr (1991); Jenkins and Burkhead (1994).

Size: 10 cm.

Native Range: Upper Roanoke (including Dan River) drainage, Virginia and North Carolina (Page and Burr 1991).

Alaska	Hawaii	Puerto Rico & Virgin Islands	Guam Saipan

Hydrologic Unit Codes (HUCs) Explained
Interactive maps: Point Distribution Maps

Means of Introduction: Probable bait bucket introduction (N. Burkhead, personal communication).

Status: Established in 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.

Remarks: Jenkins and Burkhead (1994) believe the Orangefin Madtom was introduced into the upper James drainage, Virginia, based on several factors: the species has only recently been recorded from the area, it is absent from good habitat elsewhere in the drainage, and it is a popular bait fish. In addition, Craig Creek is well used by anglers, and the site is near the upper Roanoke, a possible source of bait. The Orangefin Madtom is proposed for federal listing (U.S. Fish and Wildlife Service 1994a).

References: (click for full references)

Burkhead, N. - U.S. Geological Survey, Biological Resources, Florida Caribbean Science Center, Gainesville, FL.

Hocutt, C.H., R.E. Jenkins, and J.R. Stauffer, Jr. 1986 . Zoogeography of the Fishes of the Central Appalachians and Central Atlantic Coastal Plain. In C.H. Hocutt and E.O. Wiley, eds. The Zoogeography of North American Freshwater Fishes. :161-212.

Jenkins, R. E., and N. M. Burkhead. 1994. Freshwater fishes of Virginia. American Fisheries Society, Bethesda, MD.

Lee, D. S., C. R. Gilbert, C. H. Hocutt, R. E. Jenkins, D. E. McAllister, and J. R. Stauffer, Jr. 1980 et seq. Atlas of North American freshwater fishes. North Carolina State Museum of Natural History, Raleigh, NC.

Page, L. M., and B. M. Burr. 1991. A field guide to freshwater fishes of North America north of Mexico. The Peterson Field Guide Series, volume 42. Houghton Mifflin Company, Boston, MA.

U.S. Fish and Wildlife Service. 1994a. Endangered and threatened wildlife and plants: animal candidate review for listing as endangered or threatened species. 50 CFR 17.11 & 17.12. Federal Register, November 15, 1994. 59(219):58982--589028. U.S. Department of the Interior, Washington, DC.

Other Resources:

Author: Fuller, P.

Peer Review Date: 5/5/2010

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.