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.

Clinostomus elongatus
Clinostomus elongatus
(Redside Dace)
Native Transplant

Copyright Info
Clinostomus elongatus (Kirtland, 1840)

Common name: Redside Dace

Taxonomy: available through www.itis.govITIS logo

Identification: Page and Burr (1991).

Size: 12 cm.

Native Range: Upper Susquehanna drainage, New York and Pennsylvania; Great Lakes (except Lake Superior) and Mississippi River basins from New York and southern Ontario to Minnesota and south to West Virginia, northern Kentucky, Indiana, Wisconsin, and Iowa (Page and Burr 1991).

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: Hendricks et al. (1979) reported the collection of a single specimen of the Redside Dace Clinostomus elongatus in Bear Creek, a tributary of the Youghiogheny River (Monongahela River drainage) in Maryland. Although these authors noted that the species is native to the drainage, they stated that the Maryland specimen may represent a bait bucket introduction. One of several reasons given was that the site, Bear Creek, is a popular fishing stream stocked with trout. Lee et al. (1980 et seq.) apparently considered the Maryland site to represent part of the native range of C. elongatus.

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 Clinostomus elongatus are found here.

StateFirst ObservedLast ObservedTotal HUCs with observations†HUCs with observations†
KY200220021Lower Levisa
MI199720112Betsy-Chocolay; Manistique River
VA199819981Upper Roanoke

Table last updated 7/14/2024

† Populations may not be currently present.

Means of Introduction: Probable bait release.

Status: Reported in Maryland.

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: The collection, made in 1977, is the first record of this species for the state of Maryland (Hendricks et al. 1979).

Other Resources:
FishBase Summary

Author: Fuller, P.

Revision Date: 4/30/2018

Peer Review Date: 12/22/2000

Citation Information:
Fuller, P., 2024, Clinostomus elongatus (Kirtland, 1840): U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=510, Revision Date: 4/30/2018, Peer Review Date: 12/22/2000, Access Date: 7/14/2024

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 [7/14/2024].

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