Greenside darter female, side view photo with black background

    Greenside Darter

    Etheostoma blennioides
    Niangua darter female, side view photo with black background

    Niangua Darter

    Etheostoma nianguae
    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