Grass Valley speckled dace

Grass Valley speckled dace
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Cypriniformes
Family:	Cyprinidae
Genus:	Rhinichthys
Species:	R. osculus
Subspecies:	†R. o. reliquus
Trinomial name
†Rhinichthys osculus reliquus Hubbs & Miller, 1972

The Grass Valley speckled dace (Rhinichthys osculus reliquus) is an extinct subspecies of fish that occurred in a single spring-fed creek in a grassy meadow in eastern Lander County, Nevada. Specimens were collected only once in 1938, and it was then considered common.^[1] The species had a distinctive speckled lower lip and silver sided body. The introduction of brook and rainbow trout to the creek is believed to be the reason for their extinction.^[1]

References

1. Miller, Robert R.; Williams, James D.; Williams, Jack E. (1989). "Extinctions of North American Fishes During the past Century" (PDF). Fisheries. 14:6 (6): 22–38. doi:10.1577/1548-8446(1989)014<0022:EONAFD>2.0.CO;2. hdl:2027.42/141989.