Fundulus sciadicus
Fundulus sciadicus
(Plains Topminnow)
Native Transplant
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Fundulus sciadicus Cope, 1865

Common name: Plains Topminnow

Taxonomy: available through www.itis.govITIS logo

Identification: Bouc (1987); Page and Burr (1991); Pflieger (1997).

Size: 7 cm.

Native Range: Disjunct distribution, Missouri River basin from western Iowa to eastern Wyoming; Missouri drainage, central Missouri; and Neosho River system, southwestern Missouri, southeastern Kansas, and northeastern Oklahoma (Page and Burr 1991).
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Native range data for this species provided in part by NatureServe NS logo
Interactive maps: Point Distribution Maps

Nonindigenous Occurrences: This species was collected from the White River (Rio Blanco County) in Colorado (Wick et al. 1981; Tyus et al. 1982; Woodling 1985). It also was introduced into the San Luis Valley (Rio Grande headwaters) in Colorado (Zuckerman and Behnke 1986). The Plains Topminnow has also been introduced into the Kansas drainage in Frenchman Creek, a tributary of the Republican River in Hitchcock County, Nebraska (Cross 1967; Cross et al. 1986), and the Cheyenne drainage in Wyoming (Gorges 1994).

Means of Introduction: The species was introduced accidentally into the San Luis Valley by the Colorado Department of Wildlife (Zuckerman and Behnke 1986). It was introduced into Rio Blanco County via unknown means, probably bait bucket release. Probable bait bucket introduction in Nebraska (Cross 1967). This species was first captured below Enders Reservoir, an area commonly fished with bait minnows, in 1959. The fish likely came from the nearby Platte River (Cross 1967).

Status: Reported in White River drainage (Woodling 1985); extirpated in Rio Grande drainage, Colorado (Zuckerman and Behnke 1986). Established in Nebraska.

Impact of Introduction: Unknown.

Remarks: Voucher specimens: Nebraska (KU 4856).

References: (click for full references)

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.

Wick, R. J., T. A. Lytle, and C. M. Haynes. 1981. Colorado squawfish and humpback chub population monitoring. Federal Aid Project SE-3-3, Job 1, Progress Report. Colorado Division of Wildlife, Denver, CO. 156 pp.

Woodling, J. 1985. Colorado's little fish: a guide to the minnows and other lesser known fishes in the state of Colorado. Colorado Division of Wildlife, Denver, CO. 77 pp.

Zuckerman, L. D., and R. J. Behnke. 1986. Introduced fishes in the San Luis Valley, Colorado. Pages 435-452 in R. H. Stroud, editor. Fish culture in fisheries management. Proceedings of a symposium on the role of fish culture in fisheries management at Lake Ozark, MO, March 31-April 3, 1985. American Fisheries Society, Bethesda, MD.

Other Resources:
FishBase Summary

Author: Fuller, P.

Revision Date: 12/5/2003

Peer Review Date: 4/1/2016

Citation Information:
Fuller, P., 2018, Fundulus sciadicus Cope, 1865: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL,, Revision Date: 12/5/2003, Peer Review Date: 4/1/2016, Access Date: 1/24/2018

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.

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Citation information: U.S. Geological Survey. [2018]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [1/24/2018].

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