Channel catfish side view photo with black background

    Channel Catfish

    Ictalurus punctatus
    Illustration of a Niangua darter

    Niangua Darter

    Etheostoma nianguae
    exclamation mark

    Endangered

    Image of a Northern studfish

    Northern Studfish

    Fundulus catenatus

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