Common carp side view photo with black background

    Common Carp

    Cyprinus carpio
    invasive icon

    Invasive

    Harlequin darter side view photo with black background

    Harlequin Darter

    Etheostoma histrio
    exclamation mark

    Endangered

See Also

Photo of a three-toed amphiuma in an aquarium.

Three-Toed Amphiuma

Amphiuma tridactylum
Photo of researcher holding a gilled siren

Western Lesser Siren

Siren intermedia nettingi