Ameiurus nebulosus
Ameiurus nebulosus
(Brown Bullhead)
Fishes
Native Transplant
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6 results for Ameiurus nebulosus (Brown Bullhead)
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Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
1458939 CA San Joaquin (HUC6) non-specific1970 18040000 San Joaquinestablished
1739745 CAAlpine[No locality description provided]2024 18040010 Upper Stanislaus 
29617 CAFresnoSan Joaquin River at Friant1940 18040001 Middle San Joaquin-Lower Chowchillaestablished
1877156 CASan JoaquinSan Joaquin River2014 18040003 San Joaquin Delta 
293855 CASan Joaquinwater diversions and pumping facilities at the Tracy [CA] Fish Collection Facility (USBR)1999 18040003 San Joaquin Deltaestablished
282379 CASan Joaquinwater diversions and pumping facilities at the Tracy [CA] Fish Collection Facility (USBR)1999 18040003 San Joaquin Deltaestablished

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 [3/13/2026].

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