Rhamdia sp. (bagre de Rio) Fishes Exotic
|
|
Common name: bagre de Rio
Taxonomy: available through
www.itis.gov
Identification: Rhamdia (and other members of the family Heptapteridae) can be distinguished from all North American freshwater catfishes in the family Ictaluridae by the presence of three pairs of barbels (vs. four in ictalurids; Nelson 2006).
Native Range: Central and South America (Nelson 2006).
|
Alaska |
Hawaii |
Puerto Rico & Virgin Islands |
Guam Saipan |
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 Rhamdia sp. are found here.
Table last updated 4/24/2024
† Populations may not be currently present.
Means of Introduction: Unknown, but likely aquarium release
Status: Unknown. Collection in two subsequent years suggests establishment.
Impact of Introduction: The impacts of this species are currently unknown, as no studies have been done to determine how it has affected ecosystems in the invaded range. The absence of data does not equate to lack of effects. It does, however, mean that research is required to evaluate effects before conclusions can be made.
References: (click for full references)
Nelson, J.S. 2006. Fishes of the world. 4th edition. John Wiley & Sons, Hoboken, NJ.
Other Resources:
Author:
Neilson, M.E.
Revision Date: 5/9/2019
Peer Review Date: 6/4/2014
Citation Information:
Neilson, M.E., 2024, Rhamdia sp. Bleeker, 1858: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?speciesID=2918, Revision Date: 5/9/2019, Peer Review Date: 6/4/2014, Access Date: 4/25/2024
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.