Grass Valley speckled dace

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.

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