Independence Valley tui chub
The Independence Valley tui chub is a subspecies of tui chub endemic to the drainage of the Independence [Valley fault system|Independence Valley] in Elko [County, Nevada|Elko County], northern Nevada.
Described as "abundant" when first collected and identified in 1965, it was considered extinct within less than a decade due to the introduction of sunfish, bass, and carp to the previously isolated watershed. However, it had been rediscovered by the year 2000, although it remains highly threatened.