Ctenopharyngodon x Hypophthalmichthys idella x nobilis
(grass carp x bighead carp)
Exotic Hybrid
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Ctenopharyngodon x Hypophthalmichthys idella x nobilis

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.

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Nonindigenous Occurrences: This hybrid has been reported from the Central Arizona Project (CAP) and interconnected Salt River Project (SRP) canals in Arizona (U.S. Fish and Wildlife Service 1994f). It was stocked in the Salton Sea, California (Dill and Cordone 1997). A specimen was collected in Orlando, Florida (Nico 2005). It was also sold and stocked in several locations in Texas in 1989 (Howells 1992a).

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.

Remarks: This hybrid is believed, but not proven, to be sterile. As of 1990 it is illegal to possess this hybrid in Texas (Howells 1992a).

Other Resources:
Fact Sheet for Ctenopharyngodon idella - USGS Nonindigenous Aquatic Species Database

Fact Sheet for Hypophthalmichthys nobilis - USGS Nonindigenous Aquatic Species Database

Author: Fuller, P.

Revision Date: 4/11/2006

Peer Review Date: 4/1/2016

Citation Information:
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: 3/22/2018

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.

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URL: https://nas.er.usgs.gov
Page Contact Information: Pam Fuller - NAS Program (pfuller@usgs.gov)
Page Last Modified: Wednesday, March 14, 2018


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. [2018]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [3/22/2018].

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