The Nonindigenous Occurrences section of the NAS species profiles has a new structure. The section is now dynamically updated from the NAS database to ensure that it contains the most current and accurate information. Occurrences are summarized in Table 1, alphabetically by state, with years of earliest and most recent observations, and the tally and names of drainages where the species was observed. The table contains hyperlinks to collections tables of specimens based on the states, years, and drainages selected. References to specimens that were not obtained through sighting reports and personal communications are found through the hyperlink in the Table 1 caption or through the individual specimens linked in the collections tables.

Micropterus salmoides
Micropterus salmoides
(Largemouth Bass)
Native Transplant
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Micropterus salmoides (Lacepède, 1802)

Common name: Largemouth Bass

Taxonomy: available through www.itis.govITIS logo

Identification: Becker (1983); Etnier and Starnes (1993); Jenkins and Burkhead (1994); Moyle (2002); Page and Burr (2011).

Size: 97 cm (Robins et al. 2018).

Native Range: St. Lawrence and Great Lakes, Hudson Bay (Red River), and Mississippi River basins from southern Quebec to Minnesota and south to the Gulf; Atlantic Slope drainages from North Carolina to Florida; Gulf Slope drainages from southern Florida into northern Mexico (Page and Burr 2011).

US auto-generated map Legend USGS Logo
Alaska auto-generated map
Hawaii auto-generated map
Caribbean auto-generated map
Puerto Rico &
Virgin Islands
Guam auto-generated map
Guam Saipan
Native range data for this species provided in part by NatureServe NS logo
Hydrologic Unit Codes (HUCs) Explained
Interactive maps: Point Distribution Maps

Nonindigenous Occurrences:

Table 1. States with nonindigenous occurrences, the earliest and latest observations in each state, and the tally and names of HUCs with observations†. Names and dates are hyperlinked to their relevant specimen records. The list of references for all nonindigenous occurrences of Micropterus salmoides are found here.

StateYear of earliest observationYear of last observationTotal HUCs with observations†HUCs with observations†
Arizona1880201338Aqua Fria; Big Chino-Williamson Valley; Bill Williams; Bouse Wash; Brawley Wash; Canyon Diablo; Centennial Wash; Chevelon Canyon; Detrital Wash; Grand Canyon; Grand Wash; Havasu Canyon; Havasu-Mohave Lakes; Imperial Reservoir; Lake Mead; Little Colorado Headwaters; Lower Colorado; Lower Colorado Region; Lower Gila; Lower Lake Powell; Lower Salt; Lower San Pedro; Lower Santa Cruz; Lower Verde; Middle Gila; Middle Gila; Middle Little Colorado; San Bernardino Valley; Santa Maria; Silver; Tonto; Upper Gila-San Carlos Reservoir; Upper Little Colorado; Upper Salt; Upper San Pedro; Upper Santa Cruz; Upper Verde; Yuma Desert
California1874201458Aliso-San Onofre; California Region; Calleguas; Central Coastal; Clear Creek-Sacramento River; Cottonwood-Tijuana; Crowley Lake; Honcut Headwaters-Lower Feather; Imperial Reservoir; Lake Tahoe; Los Angeles; Lower Colorado; Lower Colorado; Lower Klamath; Lower Pit; Lower Sacramento; Middle Kern-Upper Tehachapi-Grapevine; Middle San Joaquin-Lower Chowchilla; Mojave; Monterey Bay; Newport Bay; Owens Lake; Pajaro; Russian; Sacramento Headwaters; Salinas; Salton Sea; San Antonio; San Diego; San Jacinto; San Joaquin; San Joaquin Delta; San Luis Rey-Escondido; San Pablo Bay; Santa Ana; Santa Clara; Santa Margarita; Santa Maria; Santa Monica Bay; Santa Ynez; South Fork American; South Fork Kern; Suisun Bay; Surprise Valley; Thomes Creek-Sacramento River; Trinity; Tulare Lake Bed; Upper Cache; Upper Deer-Upper White; Upper Kaweah; Upper Klamath; Upper Pit; Upper Sacramento; Upper San Joaquin; Upper Stony; Upper Tule; Upper Yuba; Ventura
Colorado1878200936Animas; Beaver; Big Thompson; Cache La Poudre; Colorado Headwaters; Colorado Headwaters-Plateau; Horse; Huerfano; Lone Tree-Owl; Lower Gunnison; Lower South Platte; Lower White; Lower Yampa; McElmo; Middle South Platte-Cherry Creek; Middle South Platte-Sterling; North Fork Republican; Piedra; Purgatoire; Republican; Rio Grande Headwaters; Rush; San Luis; South Fork Republican; South Platte; St. Vrain; Two Butte; Uncompahgre; Upper Arkansas; Upper Arkansas-John Martin Reservoir; Upper Arkansas-Lake Meredith; Upper Dolores; Upper San Juan; Upper South Platte; Upper White; Upper Yampa
Connecticut185020108Housatonic; Lower Connecticut; New England Region; Pawcatuck-Wood; Quinnipiac; Saugatuck; Shetucket; Thames
Delaware192620076Brandywine-Christina; Broadkill-Smyrna; Choptank; Delaware Bay; Nanticoke; Upper Chesapeake
District of Columbia199920101Middle Potomac-Anacostia-Occoquan
Georgia196220085Broad; Little; Tugaloo; Upper Oconee; Upper Ogeechee
Hawaii185620054Hawaii; Kauai; Maui; Oahu
Idaho1887201637American Falls; Bear Lake; Beaver-Camas; Blackfoot; Boise-Mores; Brownlee Reservoir; C.J. Strike Reservoir; Clearwater; Coeur d'Alene Lake; Curlew Valley; Idaho Falls; Kootenai; Lake Walcott; Lemhi; Little Wood; Lower Bear; Lower Bear-Malad; Lower Boise; Lower Kootenai; Lower North Fork Clearwater; Lower Salmon; Lower Snake-Asotin; Middle Bear; Middle Snake-Boise; Middle Snake-Succor; North Fork Payette; Pacific Northwest Region; Palouse; Payette; Pend Oreille Lake; Portneuf; Spokane; St. Joe; Teton; Upper Snake-Rock; Upper Spokane; Weiser
Iowa188519871North Raccoon
Kansas1958200830Beaver; Buckner; Coon-Pickerel; Cow; Crooked; Gar-Peace; Little Arkansas; Lower North Fork Solomon; Lower Republican; Lower Smoky Hill; Lower South Fork Solomon; Lower Walnut Creek; Medicine Lodge; Middle Arkansas-Slate; Middle Republican; Middle Smoky Hill; Ninnescah; North Fork Ninnescah; North Fork Smoky Hill; Pawnee; Rattlesnake; Smoky Hill Headwaters; Solomon; South Fork Ninnescah; South Fork Republican; Upper Cimarron; Upper Cimarron-Bluff; Upper North Fork Solomon; Upper South Fork Solomon; Upper Walnut Creek
Kentucky196120041Upper Cumberland
Maine1910200913Aroostook; Dead; Kennebec; Lower Androscoggin; Lower Kennebec; Lower Penobscot; Maine Coastal; New England Region; Piscataqua-Salmon Falls; Presumpscot; Saco; St. George-Sheepscot; Upper Kennebec
Maryland1854201112Cacapon-Town; Choptank; Conococheague-Opequon; Gunpowder-Patapsco; Lower Potomac; Lower Susquehanna; Mid Atlantic Region; Middle Potomac-Anacostia-Occoquan; Middle Potomac-Catoctin; Monocacy; Patuxent; Tangier
Massachusetts1860200917Blackstone; Cape Cod; Charles; Chicopee; Concord; Farmington; Housatonic; Hudson-Hoosic; Merrimack; Merrimack River; Middle Connecticut; Miller; Narragansett; Nashua; New England Region; Quinebaug; Westfield
Montana1914201472Arrow; Battle; Beaver; Belle Fourche; Big Dry; Big Horn Lake; Big Muddy; Big Sandy; Bitterroot; Blackfoot; Box Elder; Boxelder; Brush Lake Closed Basin; Bullwhacker-Dog; Charlie-Little Muddy; Clarks Fork Yellowstone; Cottonwood; Fisher; Flathead Lake; Flint-Rock; Fort Peck Reservoir; Judith; Little Bighorn; Little Dry; Little Powder; Lodge; Lower Bighorn; Lower Clark Fork; Lower Flathead; Lower Milk; Lower Musselshell; Lower Powder; Lower Tongue; Lower Yellowstone; Lower Yellowstone-Sunday; Madison; Middle Clark Fork; Middle Kootenai; Middle Milk; Middle Musselshell; Middle Powder; Milk; Missouri Headwaters; Missouri-Poplar; Mizpah; Musselshell; O'Fallon; Peoples; Poplar; Prairie Elk-Wolf; Pryor; Redwater; Rosebud; Sage; South Fork Flathead; Stillwater; Sun; Swan; Teton; Tongue; Upper Clark Fork; Upper Little Missouri; Upper Missouri; Upper Missouri; Upper Missouri-Dearborn; Upper Musselshell; Upper Tongue; Upper Yellowstone; Upper Yellowstone; Upper Yellowstone-Lake Basin; Upper Yellowstone-Pompeys Pillar; Whitewater
Nebraska1967200933Dismal; Frenchman; Harlan County Reservoir; Lewis and Clark Lake; Little Nemaha; Loup; Lower Elkhorn; Lower Middle Loup; Lower Niobrara; Lower North Loup; Lower North Platte; Lower Platte; Lower Platte-Shell; Middle Big Blue; Middle Niobrara; Middle North Platte-Scotts Bluff; Middle Platte-Buffalo; Middle Platte-Prairie; Middle Republican; Missouri Region; North Fork Elkhorn; North Fork Republican; Prairie Dog; Red Willow; Salt; Snake; Upper Elkhorn; Upper Little Blue; Upper Middle Loup; Upper Niobrara; Upper North Loup; Upper Republican; West Fork Big Blue
Nevada1909200524Carson Desert; Central Lahontan; Fish Lake-Soda Spring Valleys; Hamlin-Snake Valleys; Havasu-Mohave Lakes; Hot Creek-Railroad Valleys; Imperial Reservoir; Lake Mead; Little Smoky-Newark Valleys; Long-Ruby Valleys; Lower Humboldt; Meadow Valley Wash; Middle Carson; Muddy; Pilot-Thousand Springs; Smoke Creek Desert; South Fork Owyhee; Spring-Steptoe Valleys; Thousand-Virgin; Truckee; Upper Amargosa; Walker; West Walker; White
New Hampshire1940200916Black-Ottauquechee; Contoocook; Merrimack River; Middle Connecticut; Miller; Nashua; New England; Pemigewasset; Piscataqua-Salmon Falls; Saco; Upper Androscoggin; Upper Connecticut; Upper Connecticut-Mascoma; Waits; West; Winnipesaukee River
New Jersey1871201413Cohansey-Maurice; Crosswicks-Neshaminy; Great Egg Harbor; Hackensack-Passaic; Lower Delaware; Lower Hudson; Mid-Atlantic Region; Middle Delaware-Mongaup-Brodhead; Middle Delaware-Musconetcong; Mullica-Toms; Raritan; Rondout; Sandy Hook-Staten Island
New Mexico1957201515Chaco; Jemez; Mimbres; Rio Grande-Albuquerque; Rio Grande-Santa Fe; San Francisco; Upper Canadian; Upper Gila; Upper Gila-Mangas; Upper Pecos-Black; Upper Pecos-Long Arroyo; Upper Rio Grande; Upper San Juan; Upper San Juan; Zuni
New York1930201317Bronx; Chenango; Hudson-Wappinger; Lower Hudson; Middle Delaware-Mongaup-Brodhead; Middle Hudson; Mohawk; Owego-Wappasening; Raquette; Rondout; Saranac River; Schoharie; Seneca; St. Regis; Upper Delaware; Upper Hudson; Upper Susquehanna
North Carolina1925201347Albemarle; Black; Cape Fear; Chowan; Coastal Carolina; Contentnea; Deep; Fishing; Haw; Little Pee Dee; Lower Cape Fear; Lower Catawba; Lower Dan; Lower Neuse; Lower Pee Dee; Lower Roanoke; Lower Tar; Lower Yadkin; Lumber; Lynches; Meherrin; Middle Neuse; Middle Roanoke; Neuse; New River; Northeast Cape Fear; Nottoway; Pamlico; Pamlico Sound; Roanoke; Roanoke Rapids; Rocky; Seneca; South Fork Catawba; South Yadkin; Tugaloo; Upper Broad; Upper Cape Fear; Upper Catawba; Upper Dan; Upper Neuse; Upper New; Upper Pee Dee; Upper Tar; Upper Yadkin; Waccamaw; White Oak River
North Dakota1980200511Apple; Cedar; Knife; Lower Cannonball; Lower Heart; North Fork Grand; Painted Woods-Square Butte; Upper Cannonball; Upper James; Upper Lake Oahe; West Missouri Coteau
Oklahoma197319972Arkansas-White-Red Region; Middle North Canadian
Oregon1888201365Alsea; Applegate; Brownlee Reservoir; Bully; Clackamas; Coast Fork Willamette; Coos; Coquille; Donner und Blitzen; Goose Lake; Guano; Harney-Malheur Lakes; Illinois; Jordan; Klamath; Lost; Lower Columbia; Lower Columbia-Clatskanie; Lower Columbia-Sandy; Lower Crooked; Lower Deschutes; Lower John Day; Lower Malheur; Lower Owyhee; Lower Rogue; Lower Willamette; Middle Columbia-Hood; Middle Columbia-Lake Wallula; Middle Fork Willamette; Middle Rogue; Middle Snake-Payette; Middle Willamette; Molalla-Pudding; Necanicum; Nehalem; North Santiam; North Umpqua; Pacific Northwest; Pacific Northwest Region; Powder; Siletz-Yaquina; Siltcoos; Silver; Siuslaw; Sixes; South Santiam; South Umpqua; Sprague; Tualatin; Umatilla; Umpqua; Upper Crooked; Upper Deschutes; Upper Grande Ronde; Upper John Day; Upper Klamath; Upper Klamath Lake; Upper Malheur; Upper Rogue; Upper Willamette; Warner Lakes; Willamette; Willow; Wilson-Trusk-Nestuccu; Yamhill
Pennsylvania1980200221Bald Eagle; Conococheague-Opequon; Crosswicks-Neshaminy; Delaware; Lehigh; Lower Juniata; Lower Susquehanna; Lower Susquehanna-Penns; Lower Susquehanna-Swatara; Lower West Branch Susquehanna; Middle Delaware-Mongaup-Brodhead; Monocacy; Pine; Potomac; Schuylkill; Susquehanna; Upper Juniata; Upper Susquehanna; Upper Susquehanna-Lackawanna; Upper Susquehanna-Tunkhannock; Upper West Branch Susquehanna
Puerto Rico191520095Cibuco-Guajataca; Culebrinas-Guanajibo; Eastern Puerto Rico; Puerto Rico; Southern Puerto Rico
Rhode Island197920094Narragansett; New England Region; Pawcatuck-Wood; Quinebaug
South Carolina1960201220Black; Broad-St. Helena; Carolina Coastal-Sampit; Edisto River; Enoree; Lake Marion; Lower Catawba; Lower Pee Dee; Lower Savannah; Lynches; North Fork Edisto; Salkehatchie; Saluda; Seneca; South Fork Edisto; Stevens; Upper Broad; Upper Savannah; Waccamaw; Wateree
South Dakota1934200338Angostura Reservoir; Bad; Cherry; Cheyenne; Elm; Fort Randall Reservoir; Grand; James; Keya Paha; Lake Thompson; Lewis and Clark Lake; Little White; Lower Belle Fourche; Lower Cheyenne; Lower James; Lower Lake Oahe; Lower Moreau; Lower White; Medicine; Medicine Knoll; Middle Big Sioux; Middle Cheyenne-Elk; Middle Cheyenne-Spring; Middle James; Middle White; Mud; North Fork Snake; Ponca; Rapid; Snake; South Fork Grand; Turtle; Upper James; Upper Lake Oahe; Upper Little Missouri; Upper Moreau; Vermillion; West Missouri Coteau
Texas1941201885Amistad Reservoir; Austin-Travis Lakes; Bois D'arc-Island; Buchanan-Lyndon B. Johnson Lakes; Buffalo-San Jacinto; Caddo Lake; Cedar; Chambers; Colorado Headwaters; Denton; Double Mountain Fork Brazos; East Fork Trinity; El Paso-Las Cruces; Elm Fork Trinity; Farmers-Mud; Hubbard; International Falcon Reservoir; Jim Ned; Lake Fork; Lake Meredith; Lake O'the Pines; Lake Texoma; Lampasas; Leon; Little Cypress; Little Wichita; Los Olmos; Lower Angelina; Lower Brazos-Little Brazos; Lower Colorado-Cummins; Lower Frio; Lower Guadalupe; Lower Nueces; Lower Pecos-Red Bluff Reservoir; Lower Prairie Dog Town Fork Red; Lower Sulpher; Lower Trinity-Kickapoo; Lower Trinity-Tehuacana; Lower West Fork Trinity; Medina; Middle Brazos-Lake Whitney; Middle Brazos-Millers; Middle Brazos-Palo Pinto; Middle Colorado; Middle Colorado-Elm; Middle Guadalupe; Middle Sabine; Navasota; Navidad; North Bosque; North Concho; North Fork Double Mountain Fork Brazos; Paint; Palo Duro; Pecan Bayou; Richland; Rio Grande-Fort Quitman; San Ambrosia-Santa Isabel; San Fernando; San Gabriel; South Concho; South Laguna Madre; Sulphur Headwaters; Toledo Bend Reservoir; Toyah; Tule; Upper Angelina; Upper Clear Fork Brazos; Upper Colorado; Upper Guadalupe; Upper Neches; Upper North Fork Red; Upper Nueces; Upper Prairie Dog Town Fork Red; Upper Sabine; Upper Salt Fork Red; Upper San Antonio; Upper Trinity; Upper West Fork Trinity; Upper Wolf; West Fork San Jacinto; White; White Oak Bayou; Wichita; Yegua
Utah1880201529Bear Lake; Great Salt Lake; Hamlin-Snake Valleys; Jordan; Little Bear-Logan; Lower Bear-Malad; Lower Beaver; Lower Dolores; Lower Green-Desolation Canyon; Lower Green-Diamond; Lower Lake Powell; Lower San Juan; Lower San Juan-Four Corners; Lower Sevier; Lower Weber; Middle Bear; Middle Sevier; Montezuma; Provo; San Pitch; San Rafael; Sevier Lake; Upper Bear; Upper Colorado-Dirty Devil; Upper Colorado-Kane Springs; Upper Green-Flaming Gorge Reservoir; Upper Lake Powell; Upper Virgin; Utah Lake
Vermont1980201113Black-Ottauquechee; Deerfield; Hudson-Hoosic; Lamoille River; Mettawee River; Middle Connecticut; Missiquoi River; St. Francois River; Upper Connecticut; Upper Connecticut-Mascoma; Waits; West; White
Virginia1961201244Albemarle; Appomattox; Banister; Blackwater; Chincoteague; Chowan; Conococheague-Opequon; Eastern Lower Delmarva; Great Wicomico-Piankatank; Hampton Roads; James; Lower Chesapeake Bay; Lower Dan; Lower James; Lower Potomac; Lower Rappahannock; Lynnhaven-Poquoson; Mattaponi; Maury; Meherrin; Middle James-Buffalo; Middle James-Willis; Middle New; Middle Potomac-Anacostia-Occoquan; Middle Potomac-Catoctin; Middle Roanoke; North Fork Shenandoah; Nottoway; Pamunkey; Potomac; Rapidan-Upper Rappahannock; Rivanna; Roanoke; Roanoke Rapids; Shenandoah; South Fork Shenandoah; Upper Chesapeake; Upper Dan; Upper James; Upper New; Upper Roanoke; Upper Yadkin; Western Lower Delmarva; York
Washington1890201158Banks Lake; Chief Joseph; Colville; Deschutes; Dungeness-Elwha; Duwamish; Franklin D. Roosevelt Lake; Grays Harbor; Hangman; Hoh-Quillayute; Hood Canal; Kettle; Lake Chelan; Lake Washington; Lewis; Little Spokane; Lower Chehalis; Lower Columbia; Lower Columbia-Clatskanie; Lower Columbia-Sandy; Lower Cowlitz; Lower Crab; Lower Skagit; Lower Snake; Lower Snake-Tucannon; Lower Spokane; Lower Yakima; Methow; Middle Columbia-Hood; Middle Columbia-Lake Wallula; Nisqually; Nooksack; Okanogan; Pacific Northwest Region; Palouse; Pend Oreille; Puget Sound; Puget Sound; Puyallup; Rock; San Juan Islands; Sanpoil; Similkameen; Skokomish; Skykomish; Snohomish; Snoqualmie; Stillaguamish; Strait of Georgia; Upper Chehalis; Upper Columbia-Entiat; Upper Columbia-Priest Rapids; Upper Crab; Upper Spokane; Upper Yakima; Walla Walla; Wenatchee; Willapa Bay
West Virginia199319943James; Middle New; Potomac
Wyoming1880199910Big Horn; Big Horn Lake; Blacks Fork; Lower Laramie; North Platte; Powder; South Platte; Upper Belle Fourche; Upper Cheyenne; Upper Green-Flaming Gorge Reservoir

Table last updated 12/4/2018

† Populations may not be currently present.

Means of Introduction: This species has been an important sport fish for many years and as such has been stocked widely in areas where it is nonindigenous. Intentional stocking for sportfishing.

Status: Established in most locations where it is found.

Impact of Introduction: The introduction of Largemouth Bass usually impact populations of small native fishes directly through predation, sometimes resulting in the decline or extinction of such species (Minckley 1973). Species that have suffered such effects include relict dace Relictus solitarius, Clover Valley speckled dace Rhinichthys osculus oligoporus, Independence Valley tui chub Gila bicolor lethoporus (U.S. Fish and Wildlife Service 1985b), a distinct population of Gila chub G. intermedia, Monkey Spring pupfish Cyprinodon sp. (Minckley 1973), White River springfish Crenichthys baileyi, Pahranagat roundtail chub Gila robusta jordani (U.S. Fish and Wildlife Service 1985b), Owens pupfish Cyprinodon radiosus (Miller and Pister 1971), wild brook trout Salvelinus fontinalis (Boucher 2003), and White River spinedace Lepidomeda albivallis (U.S. Fish and Wildlife Service 1994e). Jenkins and Burkhead (1994) speculated that introduced Largemouth Bass may have contributed to the demise of an isolated population of trout-perch Percopsis omiscomaycus in the Potomac River in Virginia and Maryland. Introduced predatory centrarchids are likely responsible for the decline of native ranid frogs in California, California tiger salamander Ambystoma californiense populations (Hayes and Jennings 1986; Dill and Cordone 1997), and the Chiricahua leopard frog Rana chiricahuensis in southeastern Arizona (Rosen et al. 1995). In Squaw Creek Reservoir in northcentral Texas, introduced Florida largemouth intergrade with native northern largemouth (Whitmore and Hellier 1988). Nonnative predators, including Largemouth Bass, have been shown to reduce the abundance and diversity of native prey species in several Pacific Northwest rivers (Hughes and Herlihy 2012). The presence of Largemouth Bass, along with other introduced piscivores, reduced the richness of native minnow communities in Adirondack lakes (Findlay et al. 2000).

Remarks: This account includes introductions of both subspecies M. s. salmoides, the northern Largemouth Bass, and M. s. floridanus, the Florida Largemouth Bass. For instance, both subspecies have been introduced into Nevada (Deacon and Williams 1984). Tyus et al. (1982) gave a distribution map of the this species in the upper Colorado basin. MacCrimmon and Robbins (1975) showed a map depicting this species' native and introduced range. Jenkins and Burkhead (1994) reported the largemouth as introduced into the Roanoke drainage in Virginia. Recently prehistoric bones of M. salmoides were discovered near the Roanoke River in Roanoke, Virginia, indicating that the species is native there (Jenkins, personal communication).

Introduced Florida Largemouth Bass are known to hybridize with native populations of northern Largemouth Bass (Whitmore and Hellier 1988), with introgression of Florida bass genes into populations occurring rapidly (Gelwick et al. 1995) and dispersing away from original introduction/stocking sites (Ray et al. 2012).

References: (click for full references)

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Becker, G.C. 1983. Fishes of Wisconsin. University of Madison Press, Madison, WI.

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Other Resources:
Distribution in Illinois - ILNHS

Micropterus salmoides (Global Invasive Species Database)

FishBase Summary

Author: Pam Fuller, and Matt Neilson

Revision Date: 6/17/2019

Peer Review Date: 4/1/2016

Citation Information:
Pam Fuller, and Matt Neilson, 2019, Micropterus salmoides (Lacepède, 1802): U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=401, Revision Date: 6/17/2019, Peer Review Date: 4/1/2016, Access Date: 6/18/2019

This information is preliminary or provisional and is subject to revision. It is being provided to meet the need for timely best science. The information has not received final approval by the U.S. Geological Survey (USGS) and is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the information.


The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2019]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [6/18/2019].

Contact us if you are using data from this site for a publication to make sure the data are being used appropriately and for potential co-authorship if warranted. For queries involving fish, please contact Matthew Neilson. For queries involving invertebrates, contact Amy Benson.