The rough sculpin (Cottus asperrimus) is a species of fish in the family Cottidae. It is endemic to the United States. Its habitat includes spring-fed tributaries of the Pit River system in northeastern Shasta County, California, including the Fall River and its major tributary, the Tule River. It reaches a maximum length of 8.4 cm.
- Gimenez Dixon, M. 1996. Cottus asperrimus. 2006 IUCN Red List of Threatened Species. Downloaded on 4 August 2007.
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