Siphateles alvordensis

Taxonomy 
Scientific Name:Siphateles alvordensis
Common name:Alvord chub
Rank and Status   
Global Rank:G2 Native Status:Native
Subnational (State) Rank:S2 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
Bureau of Land Management - Nevada Sensitive BLM Nevada Sensitive Species List dated 2017-10-01
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

Humboldt
Summary Occurrence Data
Occurrence Count:13
Total Observed Area (hectares):Not Available
Maximum Known Elevation (m):Not available
Minimum Known Elevation (m):1284
Links
Siphateles alvordensis data at NatureServe
Siphateles alvordensis photos and data at Encyclopedia of Life
Character Abstract
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Habitat Comments:Alvord chub were never collected along with another fish species. This separation of species was dramatically illustrated in Virgin Creek where the northern end of the Virgin Creek Gorge formed a boundary separating introduced rainbow trout to the south and Alvord chub to the north. Separation probably consists of interspecific competition for food, space, predation and physical variables of the habitat (Williams 1980). Alvord chub occupy a wide variety of habitats from cool and warm springs and outflows to reservoirs and lakes devoid of other fish species. It was observed in a warm spring out flow (Bog Hot Springs). Fish were not found in the outflow above the 31.1°C thermal barrier. Nevada populations were found to be similar to each other; however, some unique qualities of the West Spring and Bog Hot Reservoir populations were noted. Taxonomic characteristics were not separable but the peculiar characteristics may make it worth preserving (Williams 1980). Alvord chub collected are found to feed on Cladocerans, copepods and ostracods. In addition diatoms, aquatic insects and plant seeds occur in their diet. Spawning is thought to occur from the end of April until July (Williams 1980).
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