Grass Valley speckled dace
Encyclopedia
The Grass Valley speckled dace (Rhinichthys
osculus reliquus) occurred in a single spring-fed creek in a grassy meadow in eastern Lander County
, Nevada
. Specimens were collected only once, in 1938. 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
.
Rhinichthys
Rhinichthys, the riffle daces, is a genus of freshwater fish in the carp family of the order Cypriniformes. The type species is Rhinichthys atratulus, the blacknose dace. Rhinichthys species range throughout North America....
osculus reliquus) occurred in a single spring-fed creek in a grassy meadow in eastern Lander County
Lander County, Nevada
Lander County is a county located in the U.S. state of Nevada. As of the 2000 census, the population was 5,794. Its county seat is Battle Mountain.-History:...
, Nevada
Nevada
Nevada is a state in the western, mountain west, and southwestern regions of the United States. With an area of and a population of about 2.7 million, it is the 7th-largest and 35th-most populous state. Over two-thirds of Nevada's people live in the Las Vegas metropolitan area, which contains its...
. Specimens were collected only once, in 1938. 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
Extinction
In biology and ecology, extinction is the end of an organism or of a group of organisms , normally a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point...
.