Common name: grass carp x bighead carp
Identification: Similar to pure grass carp but with many features intermediate between the two parent species. Howells (1992) provided distinguishing features. Maximum size: Probably similar to grass carp, 75 -125 cm.
Native Range: None; artificial hybrid.
Interactive maps: Point Distribution Maps
Puerto Rico &
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 Ctenopharyngodon x Hypophthalmichthys idella x nobilis are found here.
Table last updated 5/25/2018
† Populations may not be currently present.
* HUCs are not listed for states where the observation(s) cannot be approximated to a HUC (e.g. state centroids or Canadian provinces).
Means of Introduction: Intentionally stocked by the Texas Parks and Wildlife Department in 1989 (Howells 1992a).
Status: Reported in Arizona and Texas. Eradicated in California.
Impact of Introduction: It failed to control hydrilla in the Salton Sea.
Fact Sheet for Ctenopharyngodon idella
- USGS Nonindigenous Aquatic Species Database
Fact Sheet for Hypophthalmichthys nobilis - USGS Nonindigenous Aquatic Species Database
Revision Date: 4/11/2006
Peer Review Date: 4/1/2016
Fuller, P., 2018, Ctenopharyngodon x Hypophthalmichthys idella x nobilis: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=515, Revision Date: 4/11/2006, Peer Review Date: 4/1/2016, Access Date: 6/19/2018
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.