brokenray

    Arkansas Brokenray

    Lampsilis reeveiana
    Arkansas darter, female, side view photo with black background

    Arkansas Darter

    Etheostoma cragini
    Bluegill male in spawning colors, side view photo with black background

    Bluegill

    Lepomis macrochirus
    Photo of a coldwater crayfish.

    Coldwater Crayfish

    Faxonius eupunctus (formerly Orconectes eupunctus)
    exclamation mark

    Endangered

    elktoe

    Elktoe

    Alasmidonta marginata
    ellipse

    Ellipse and Bleedingtooth

    Venustaconcha ellipsiformis and V. pleasii
    fatmucket

    Fatmucket

    Lampsilis siliquoidea
    Monkey Face Mussel

    Freshwater Mussels

    Bivalve molluscs in order Unionoida
    Longear sunfish, spawning male, side view photo with black background

    Longear Sunfish

    Lepomis megalotis
    Photo of a longpincered crayfish.

    Longpincered Crayfish

    Faxonius longidigitus (formerly Orconectes longidigitus)
    Niangua darter female, side view photo with black background

    Niangua Darter

    Etheostoma nianguae
    exclamation mark

    Endangered

    Orangethroat darter female, side view photo with black background

    Orangethroat Darter

    Etheostoma spectabile
    Redfin darter side view photo with black background

    Redfin Darter

    Etheostoma whipplei
    exclamation mark

    Endangered

    Photo of a northern, also called virile, crayfish.

    Virile Crayfish (Northern Crayfish)

    Faxonius virilis (formerly Oronectes virilis)
    Water springtails congregate in water above soggy dead leaves

    Water Springtail

    Podura aquatica