Fish Species

Fish Species by Watersheds : 'Lower South Fork Mokelumne River-180400120203'

Freshwater native and non-native fish species present currently and/or historically, determined from the PISCES database (Feb. 26, 2014).  Some species, such as salmon or steelhead, may no longer be present upstream of dams that lack fish passage.

Yes/No corresponds to California native species

Black Bullhead

  • Ameiurus melas
  • No

  • Thumbnail. Black bullhead, approximately 15 cm (6”) long. Location: Suisun Marsh, California Date: 8/6/2007. Photo by Dave Giordano.

Brown Bullhead

  • Ameiurus nebulosus
  • No

  • Thumbnail. Brown bullhead. Caught in Seneca County, New York. Photo by Arthur Masloski, January 2009.

Brown Trout

  • Salmo trutta
  • No

  • Thumbnail. Brown trout, approximately 20 cm (8”) long. Location: Deer Creek, California Date: 6/21/2007. Photo by Dave Giordano

Central Valley spring Chinook Salmon

  • Oncorhynchus tshawytscha
  • Yes

  • Thumbnail. Chinook salmon. Spring-run Chinook salmon (female spawner) swimming in Butte Creek, CA on 14 September 2006. Photo - Lisa Thompson, UC Davi

Central Valley Steelhead

  • Oncorhynchus mykiss
  • Yes

  • Thumbnail. Rainbow trout, 18 cm (7”) long. Location: Deer Creek, California (Yuba River basin). Date: 6/21/2007. Photo by Dave Giordano.

Coastal Rainbow Trout

  • Oncorhynchus mykiss irideus
  • Yes

  • Thumbnail. Rainbow trout, 18 cm (7”) long. Location: Deer Creek, California (Yuba River basin). Date: 6/21/2007. Photo by Dave Giordano.

Green Sunfish

  • Lepomis cyanellus
  • No

  • Thumbnail. Green sunfish with measurements Location: Leonard Lake, California Date: 8/6/2008 Photo: Lisa Thompson

Hardhead

  • Mylopharodon conocephalus
  • Yes

  • Thumbnail. Hardhead, adult, right side. Location: Center for Aquatic Biology and Aquaculture, UC Davis. Date: 17 May 2007. Photo by Dave Giordano.

Redear Sunfish

  • Lepomis microlophus
  • No

  • Thumbnail. Redear sunfish. Photo courtesy of Professor Peter B. Moyle.

Sacramento Hitch

  • Lavinia exilicauda exilicauda
  • Yes

  • Thumbnail. Hitch adult. Photo courtesy of Professor Peter B. Moyle.

Sacramento Pikeminnow

  • Ptychocheilus grandis
  • Yes

  • Thumbnail. Sacramento pikeminnow, juvenile. Location: Deer Creek California (Yuba River basin). Date: 6/20/2007. Photo by Dave Giordano.

Smallmouth Bass

  • Micropterus dolomieu
  • No

  • Thumbnail. Smallmouth bass. Photo courtesy of Drew Gregory.

Western Mosquitofish

  • Gambusia affinis
  • No

  • Thumbnail. Western mosquitofish, captured in rotary screw trap on Sacramento River at Knight's Landing. Date: 1/29/2009. Photo by Dan Worth, CDFW.