Agosia chrysogaster
Agosia chrysogaster
(Longfin Dace)
Native Transplant
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Agosia chrysogaster Girard, 1856

Common name: Longfin Dace

Taxonomy: available through www.itis.govITIS logo

Identification: Minckley (1973); Sublette et al. (1990); Page and Burr (1991). Another name is Rhinichthys chrysogaster, however ITIS does not recognize this as a synonym.

Size: 10 cm.

Native Range: Lower Colorado River drainage, New Mexico and Arizona, and south through southern Arizona and Pacific drainages of western Mexico (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 is known from the Virgin River in northwestern Arizona (Minckley 1973; Lee et al. 1980 et seq.) and from several areas in New Mexico including the Rio Grande Basin, Rio Hondo (Pecos drainage), the Mimbres River, Largo Creek (Little Colorado River drainage), and the Zuni River (Koster 1957; Minckley 1973; Lee et al. 1980 et seq.; Propst et al. 1987; Sublette et al. 1990).

Means of Introduction: Unknown; probable bait bucket releases. Introduced as early as the 1950s into parts of the Rio Grande basin of New Mexico. The Rio Hondo, Mimbres, and Largo Creek introductions all occurred in the 1960s (Sublette et al. 1990).

Status: The Largo Creek population was extirpated by 1990, but the New Mexico populations in Rio Hondo and the Mimbres remain established (Sublette et al. 1990). It is locally established in a portion of the Rio Grande basin (Sublette et al. 1990). Reported but not known to be established in the Zuni River, New Mexico, and in the Virgin River, Arizona (Lee et al. 1980 et seq.). The status of the Virgin River population is unknown.

Impact of Introduction: Unknown.

Remarks: Koster (1957) reported that the species is used as a baitfish.

Other Resources:
FishBase Summary

Author: Leo Nico, and Pam Fuller

Revision Date: 3/1/2009

Peer Review Date: 4/1/2016

Citation Information:
Leo Nico, and Pam Fuller, 2018, Agosia chrysogaster Girard, 1856: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL,, Revision Date: 3/1/2009, Peer Review Date: 4/1/2016, Access Date: 1/23/2018

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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Page Last Modified: Thursday, January 11, 2018


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Citation information: U.S. Geological Survey. [2018]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [1/23/2018].

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