Common name: Slender Madtom
available through www.itis.gov
Identification: Becker (1983); Robison and Buchanan (1988); Page and Burr (1991); Etnier and Starnes (1993); Pflieger (1997).
Size: 15 cm.
Native Range: Green, Cumberland, and Tennessee River drainages from central Kentucky
to nothern Alabama; and the upper Mississippi River basin from southern
Wisconsin and southern Minnesota to Ozark an Ouachia Highlands of
Arkansas, Kansas, and Oklahoma (Page and Burr 1991).
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 Noturus exilis are found here.
Table last updated 2/27/2023
† Populations may not be currently present.
Means of Introduction: Possible bait release; alternatively, this collection could represent
an unusual natural distribution pattern that may give clues to past
river connections (Robison and Winters 1978; Robison and Buchanan
Status: Reported in Arkansas.
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.
Revision Date: 12/2/1999
Peer Review Date: 12/2/1999
Fuller, P., 2023, Noturus exilis Nelson, 1876: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?speciesID=744, Revision Date: 12/2/1999, Peer Review Date: 12/2/1999, Access Date: 6/4/2023
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.