Crenichthys nevadae

Scientific Name:Crenichthys nevadae
Common name:Railroad Valley Springfish
Rank and Status   
Global Rank:G2 Native Status:Native
Subnational (State) Rank:S2 Endemic:Yes
US ESA Status:Listed threatened Sand Dunes:No
NNHP Tracking Status:At-Risk List Wetland:Yes
Other Agency Status Status Last Updated Status Comments
Bureau of Land Management - Nevada Sensitive BLM Nevada Sensitive Species List dated 2017-10-01
US Forest Service - Region 4 (Intermountain) Threatened USFS list, Jan 2015 update
State of Nevada Protected Threatened Fish NAC 503.065.3
Nevada Wildlife Action Plan - 2012 Species of Conservation Priority
Nevada Wildlife Action Plan - 2005 Species of Conservation Priority
CCVI Score Presumed Stable Conf. VH.
Distribution (NV Counties)

Status: Predicted or probable


Status: Confident or certain

Summary Occurrence Data
Occurrence Count:16
Total Observed Area (hectares):Not Available
Maximum Known Elevation (m):1707
Minimum Known Elevation (m):1426
Crenichthys nevadae data at NatureServe
Crenichthys nevadae photos and data at Encyclopedia of Life
Character Abstract
Identification Comments:
Subspecies Comments:Recent genetic analysis (Campbell 2017) suggests that two clades are present, a northern (Duckwater) and a southern (Railroad Valley-Lockes).  Both mitochondrial and nuclear data suggest that the two lineages are present, implying there may be two species where only one is currently described. 
Food Habits:Diet predominantly consists of invertebrates in Railroad Valley, with gastropods most important in June. These fish also eat substantial amounts of plant material, especially filamentous algae (Sigler and Sigler 1987).
Phenology Comments:
Reproduction Comments:
Migration Mobility:
Habitat Comments:Railroad Valley springfish inhabit warm spring pools, outflow streams, and adjacent marshes. They are able to tolerate high temperatures and low dissolved oxygen. Duckwater and Lockes Ranch springs have outflow temperatures of 32.3 and 37.3°C and minimum oxygen concentrations of 0.5 and 0.9 ppm, respectively (Lee et al. 1980).
Ecology comments:Historically occurred in four springs (Big, North, Hay Corral, and Reynolds) near Lockes Ranch and two springs (Big Warm and Little Warm) on the Duckwater Shoshone Indian Reservation, and in the outflow systems associated with these spring complexes. The Big Warm Spring has been recently (2007) restored and fish from Little Warm Spring translocated into the newly restored habitat.  Three introduced populations occur in Nye and Mineral counties outside of historic range but are not actively managed as species refuges.
Version Date:
several in aquarium
Photographer: Glenn Clemmer, Nevada Natural Heritage Program
Photo Date:
Photographer: Glenn Clemmer, Nevada Natural Heritage Program
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