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  • All fields: 2012-02-03
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    • Asian carp

    • Asian carp
    • Aquatic environments; Fishes; Fisheries management;
    • Three species of Asian carp (from top: bighead carp, silver carp, and grass carp) captured on the Missouri River floodplain.
    • Grass carp (Triploid)

    • Grass carp (Triploid)
    • Fishes; Fisheries management;
    • Grass carp is an Asian fish species that was imported into the United States in the 1960s. Because many conservationists wanted to reduce human dependencies on use of toxic chemicals, This introduction was considered to be an alternative to...
    • Grass carp

    • Grass carp
    • Aquatic environments; Fishes; Fisheries management;
    • U.S. Geological Survey staff holds a wild captured grass carp from the Missouri River.
    • Grass carp

    • Grass carp
    • Aquatic environments; Fishes; Fisheries management;
    • Colby Wrasse of the Carterville Fish and Wildlife Conservation Office holds a grass carp captured during a fishery assessment.

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