University of California
California Fish Website

Non-Native Fish Species

American Shad

Alosa sapidissima
Non-Native
Thumbnail. American shad, head. Caught on the Feather River (Star Bend boat launch) on 4 July 2008. Approximately 20 cm TL.  Photo by Brian Currier.

Bigscale Logperch

Percina macrolepida
Non-Native
Thumbnail. Bigscale logperch, captured from Putah Creek in November 2008. Photo by Teejay O'Rear, March 2009.

Black Bullhead

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

Black Crappie

Pomoxis nigromaculatus
Non-Native
Thumbnail. Black crappie, captured in rotary screw trap on the Sacramento River at Knight's Landing on 2/26/2009. Photo by Dan Worth, CDFW

Blue Catfish

Ictalurus furcatus
Non-Native
Thumbnail. Blue catfish, adult. Caught in Marion, Alabama on 9 February 1994. Photo by Konrad Schmidt, Nongame Fish Biologist, DES, Minn. DNR

Blue Tilapia

Oreochromis aureus
Non-Native

Bluegill

Lepomis macrochirus
Non-Native
Thumbnail. Bluegill approximately 15 cm (6”) long. Location: Leonard Lake, California Date: 8/6/2008 Photo: Lisa Thompson

Brook Stickleback

Culaea inconstans
Non-Native
Thumbnail. Brook stickleback. Photo by Konrad Schmidt, Nongame Fish Biologist, Division of Ecological Services, Minnesota DNR

Brook Trout

Salvelinus fontinalis
Non-Native
Thumbnail. Brook trout, captured in Lassen Creek, Modoc County, CA, on 8 July 2007. Photo by Dave Giordano

Brown Bullhead

Ameiurus nebulosus
Non-Native
Thumbnail. Brown bullhead. Caught in Seneca County, New York. Photo by Arthur Masloski, January 2009.

Brown Trout

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

Channel Catfish

Ictalurus punctatus
Non-Native
Thumbnail. Channel catfish, caught in Nacimiento Reservoir in May 2008 by Teejay O'Rear. Photo by Amber Manfree.

Common Carp

Cyprinus carpio
Non-Native
Thumbnail. Common carp approximately 18 cm (7”) long. Location: Suisun Marsh, California. Date: 8/8/2008. Photo by Dave Giordano.

Fathead Minnow

Pimephales promelas
Non-Native
Thumbnail. Fathead minnow. Photo by Konrad Schmidt, Nongame Fish Biologist, Division of Ecological Services, Minnesota Department of Natural Resources

Flathead Catfish

Pylodictis olivaris
Non-Native
Thumbnail. Flathead catfish, adult. Caught in the St. Croix River, Washington County, Minnesota, in summer 1976. Photo by Konrad Schmidt, Minn. DNR

Golden Shiner

Notemigonus crysoleucas
Non-Native
Thumbnail. Golden shiner, caught in Iron Gate Reservoir, California on 12 May 2009 by Teejay O'Rear. Photo by Amber Manfree.

Goldfish

Carassius auratus
Non-Native
Thumbnail. Goldfish, captured in rotary screw trap on Sacramento River at Knight's Landing. Date: January 2009. Photo by Dan Worth, CDFW.

Grass Carp

Ctenopharyngodon idella
Non-Native
Thumbnail. Grass carp. Photographed on 05/13/08, by Konrad Schmidt, Nongame Fish Biologist, Division of Ecological Services, Minnesota DNR.

Green Sunfish

Lepomis cyanellus
Non-Native
Thumbnail. Green sunfish with measurements Location: Leonard Lake, California Date: 8/6/2008 Photo: Lisa Thompson

Kokanee (Sockeye Salmon)

Oncorhynchus nerka
Non-Native
Thumbnail. Kokanee salmon. Location: Kootenay Lake, BC, Canada, Date: circa 1994, Photo by Lisa Thompson.

Lake Trout

Salvelinus namaycush
Non-Native
Thumbnail. Lake trout, captured from Donner Lake on 12/21/2009. Length: 53 cm (21

Land Shark

Chevus chasus
Non-Native
Thumbnail. Land shark. South Fork American River, near Placerville, CA. October 22, 2011. Photo by Dave Giordano.

Largemouth Bass

Micropterus salmoides
Non-Native
Thumbnail. Largemouth bass approximately 30 cm (12”) long. Location: Deer Creek, California Date 6/22/2007. Photo by Dave Giordano.

Mississippi Silverside

Menidia beryllina
Non-Native
Thumbnail. Mississippi silverside approximately 8 cm (3”) long. Location: Suisun Marsh, California Date: 8/8/2008. Photo by Dave Giordano.

Mozambique Tilapia

Oreochromis mossambicus
Non-Native
Thumbnail. Mozambique tilapia hybrid, female, captured from the Salton Sea in 2006. Photo by Sharon Keeney, CDFW.

Nile Tilapia

Oreochromis niloticus
Non-Native

Northern Pike

Esox lucius
Non-Native
Thumbnail. Northern pike, captured from Lake Davis, CA. Photo by Robert Vincik, California Department of Fish and Game.

Porthole Livebearer

Poeciliopsis gracilis
Non-Native
Thumbnail. Porthole livebearer, female. Location: Irrigation drain (Oasis-Grant), north end of the Salton Sea. 5/20/2010. Photo - Sharon Keeney, CDFW.

Pumpkinseed

Lepomis gibbosus
Non-Native
Thumbnail. Pumpkinseed, captured from Lake Davis, CA. Photo by Robert Vincik, California Department of Fish and Game.

Rainwater Killifish

Lucania parva
Non-Native

Red Shiner

Cyprinella lutrensis
Non-Native
Thumbnail. Red shiner. Caught in the Rock River, Rock County, Minnesota, in July 2002. Photo by Konrad Schmidt, Minn. DNR.

Redbelly Tilapia

Tilapia zillii
Non-Native
Thumbnail. Redbelly tilapia, spawning colors. Location: Arthur 0.5 Drain, Salton Sea. Date: Oct. 28, 2010. Photo by Sharon Keeney, CDFW.

Redear Sunfish

Lepomis microlophus
Non-Native
Thumbnail. Redear sunfish. Photo courtesy of Professor Peter B. Moyle.

Redeye Bass

Micropterus coosae
Non-Native
Thumbnail. Redeye bass, adult. Caught in eastern USA. Photo courtesy of Drew Gregory.

Sailfin Molly

Poecilia latipinna
Non-Native
Thumbnail. Sailfin molly, male, left side. Irrigation drain (Oasis-Grant Drain) at the north end of the Salton Sea, 2010. Photo - Sharon Keeney, CDFW.

Shimofuri Goby

Tridentiger bifasciatus
Non-Native
Thumbnail. Shimofuri goby, approximately 5 cm (2”) long. Location: Suisun Marsh, California Date: 8/6/2007. Photo by Dave Giordano.

Shokihaze Goby

Tridentiger barbatus
Non-Native
Thumbnail. Shokihaze goby, captured in Suisun Marsh, CA on 6 August 2007. Length: 5 cm (2 inches). Photo by Dave Giordano.

Shortfin Molly

Poecilia mexicana
Non-Native
Thumbnail. Shortfin molly, male. Location: In a wash just south of Bombay Beach, Salton Sea. Date: Sept. 27, 2010. Photo by Sharon Keeney, CDFW.

Smallmouth Bass

Micropterus dolomieu
Non-Native
Thumbnail. Smallmouth bass. Photo courtesy of Drew Gregory.

Spotted Bass

Micropterus punctulatus
Non-Native
Thumbnail. Spotted bass, juvenile, approximately 7.5 cm (3”) long. Location: Deer Creek, California Date: 6/22/2007. Photo by Dave Giordano.

Striped Bass

Morone saxatilis
Non-Native
Thumbnail. Striped bass, approximately 18 cm (7”) long. Location: Suisun Marsh, California Date: 8/6/2007. Photo by Dave Giordano.

Tench

Tinca tinca
Non-Native
Thumbnail. Tench, caught in Storrington, West Sussex, England on 19 August 2009. Photo by Peter Collington.

Threadfin Shad

Dorosoma petenense
Non-Native
Thumbnail. Threadfin shad. Photo by Robert Vincik, CDFW.

Wakasagi

Hypomesus nipponensis
Non-Native
Thumbnail. Wakasagi, captured in rotary screw trap on the Sacramento River at Knight's Landing on 2/26/2009. Photo by Dan Worth, CDFW.

Warmouth

Lepomis gulosus
Non-Native
Thumbnail. Warmouth, Sacramento River at Knight's Landing, 12/16/2009. Length approximately 9 cm (3.5 inches). Photo by Kasie Barnes, CDFW.

Western Mosquitofish

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

White Bass

Morone chrysops
Non-Native
Thumbnail. White bass, caught in Nacimiento Reservoir, CA, by Teejay O'Rear. Photo by Amber Manfree.

White Catfish

Ameiurus catus
Non-Native
Thumbnail. White catfish swimming, approximately 21 cm (6”) long. Location: Deer Creek, California Date: 6/20/2007. Photo by Dave Giordano.

White Crappie

Pomoxis annularis
Non-Native
Thumbnail. White crappie. Photo courtesy of Corey Geving, webmaster at roughfish.com.

Yellow Bullhead

Ameiurus natalis
Non-Native
Thumbnail. Yellow bullhead. Photo by Konrad Schmidt, Nongame Fish Biologist, Division of Ecological Services, Minnesota Dept. of Natural Resources

Yellow Perch

Perca flavescens
Non-Native
Thumbnail. Yellow perch, caught in Iron Gate Reservoir, California on 13 May 2009 by Teejay O'Rear. Photo by Amber Manfree.

Yellowfin Goby

Acanthogobius flavimanus
Non-Native
Thumbnail. Yellowfin goby, approximately 10 cm (4”) long. Location: Suisun Marsh, California Date: 8/8/2008.

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