Siphateles bicolor eurysoma

Scientific Name:Siphateles bicolor eurysoma
Common name:Sheldon tui chub
Rank and Status   
Global Rank:G4T1 Native Status:Native
Subnational (State) Rank:S1 Endemic:No
US ESA Status:None Sand Dunes:No
NNHP Tracking Status:At-Risk List Wetland:Yes
Other Agency Status Status Last Updated Status Comments
State of Nevada Protected Protected Fish NAC 503.065.1
Nevada Wildlife Action Plan - 2012 Species of Conservation Priority
CCVI Score Highly Vulnerable Conf. Low; Factors contributing to increased vulnerability are natural barriers and historical and physiological hydrological niche.
Distribution (NV Counties)

Status: Confident or certain

Summary Occurrence Data
Occurrence Count:4
Total Observed Area (hectares):Not Available
Maximum Known Elevation (m):Not available
Minimum Known Elevation (m):1718
Siphateles bicolor eurysoma data at NatureServe
Siphateles bicolor eurysoma photos and data at Encyclopedia of Life
Character Abstract
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Habitat Comments:Siphateles (Gila) eurysomas occurs in the Guano and Catlow Valleys of northwestern Nevada and southeastern Oregon. The six known populations of S. eurysomas distributed in small, isolated springs and intermittent streams in these two valleys, without the possibility of migration or transport among populations. The general predilection of tui chubs is to occupy low elevation, no gradient aquatic habitats that are remnants of larger Pleistocene aquatic ecosystems. Young fish eat mostly invertebrates, adding plant material and especially algae as they mature. They spawn between late April and early August, depending on temperatures.
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