Common name: Relict Dace
Synonyms and Other Names: Steptoe dace
available through www.itis.gov
Identification: Sigler and Sigler (1987); Page and Burr (1991). Maximum size: 13 cm.
Native Range: Lakes Franklin, Gale, Waring, Steptoe and Spring basins
in eastern Nevada (Page and Burr 1991).
Puerto Rico &
Hydrologic Unit Codes (HUCs) Explained
Native range data for this species provided in part by NatureServe
Interactive maps: Point Distribution Maps
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 Relictus solitarius are found here.
Table last updated 10/4/2018
† Populations may not be currently present.
Means of Introduction: The Shoshone Ponds population was intentionally introduced for conservation purposes with stock transplanted from ponds in Steptoe Valley, Nevada. The plant created an additional population of a rare species with a restricted range. The introduction of this species into Spring Valley, Nevada, may have been for mosquito control, or possibly as a curiosity (Hubbs et al. 1974). In 1942, a rancher testified that he had taken this minnow from Butte Valley to Lake Mead, where the fish was used as bait (Hubbs et al. 1974); however, we are unaware of any records of this species in Lake Mead.
Status: Locally established. The Relict Dace population at Shoshone Ponds had increased to an estimated 502 individuals by August 1989 (Clemmer, personal communication). The status of this species in other sites where introduced is unknown.
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: 9/28/1999
Peer Review Date: 4/1/2016
Nico, L., 2019, Relictus solitarius Hubbs and Miller, 1972: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=636, Revision Date: 9/28/1999, Peer Review Date: 4/1/2016, Access Date: 5/20/2019
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.