Crangonyx floridanus
(Florida crangonyctid, a freshwater amphipod)
Crustaceans-Copepods
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22 results for Crangonyx floridanus (Florida crangonyctid, a freshwater amphipod)
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Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
623633 CAContra CostaDiscovery Bay / Indian Slough2005 18040003 San Joaquin Deltaestablished
623630 CAContra CostaPiper Slough, Boyd's Harbor (Franks Tract)2005 18040003 San Joaquin Deltaestablished
623634 CAContra CostaSan Joaquin River, Driftwood Marina (Antioch)2005 18040003 San Joaquin Deltaestablished
257171 CAContra CostaSand Mound Slough, about 1.3 miles southwest of Franks Tract1998 18040003 San Joaquin Deltaestablished
623629 CASacramentoDelta [general location]1998 18020163 Lower Sacramentoestablished
623628 CASacramentoDelta [general location]2005 18020163 Lower Sacramentoestablished
623632 CASacramentoDelta Cross Channel2005 18020163 Lower Sacramentoestablished
623641 CASacramentoSacramento River II/Vieria's Resort2005 18020163 Lower Sacramentoestablished
623631 CASacramentoSacramento River, Courtland2005 18020163 Lower Sacramentoestablished
257099 CASacramentoSacramento/San Joaquin River Delta, Donlon Island, Donlon Lake, restoring wetland.1998 18020163 Lower Sacramentoestablished
257170 CASacramentoSacramento/San Joaquin River Delta, Kimball Island, just of Sherman Island, restoring wetland.1998 18020163 Lower Sacramentoestablished
623636 CASan JoaquinMiddle River, at Mildred Island2005 18040003 San Joaquin Deltaestablished
623638 CASan JoaquinMiddle River, Union Point2005 18040003 San Joaquin Deltaestablished
623643 CASan JoaquinSan Joaquin River at Mossadale Mossdale (marina)2005 18040003 San Joaquin Deltaestablished
257108 CASan JoaquinSan Joaquin River Delta, lower Manderville Island tip, restoring wetland.1998 18040003 San Joaquin Deltaestablished
257109 CASan JoaquinSan Joaquin River Delta, lower Manderville Island tip, restoring wetland.1999 18040003 San Joaquin Deltaestablished
257174 CASan JoaquinSan Joaquin River Delta, upper Mandeville Island tip, natural wetland.1998 18040003 San Joaquin Deltaestablished
257177 CASan JoaquinSan Joaquin River Delta, Venice Cut, southeastern end of Venice Island, restoring wetland.1998 18040003 San Joaquin Deltaestablished
257181 CASan JoaquinSan Joaquin River Delta, Venice Cut, southeastern end of Venice Island, restoring wetland.1999 18040003 San Joaquin Deltaestablished
623637 CASolanoSacramento River, at Horseshoe Bend/Decker Island2005 18020163 Lower Sacramentoestablished
623640 CASolanoSteamboat Slough/Hidden Harbor2005 18020163 Lower Sacramentoestablished
1753466 FLAlachuaSanta Fe Lake, Santa Fe1975 03110206 Santa Fe 

Data Disclaimer: Number of records does not imply species abundance. This summary represent collection records only and may not reflect the actual distribution of established populations. These data are preliminary or provisional and are subject to revision. They are being provided to meet the need for timely best science. The data have not received final approval by the U.S. Geological Survey (USGS) and are 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 data.

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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. [2026]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [2/23/2026].

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