American eel side view photo with black background

    American Eel

    Anguilla rostrata
    Black crappie, male in spawning colors, side view photo with black background

    Black Crappie

    Pomoxis nigromaculatus
     Central mudminnow side view photo with black background

    Central Mudminnow

    Umbra limi
    exclamation mark

    Endangered

    deertoe

    Deertoe

    Truncilla truncata
    fatmucket

    Fatmucket

    Lampsilis siliquoidea
    fragile papershell

    Fragile Papershell

    Leptodea fragilis
    Monkey Face Mussel

    Freshwater Mussels

    Bivalve molluscs in order Unionoida
    giant floater

    Giant Floater

    Pygandon grandis
    Harlequin darter side view photo with black background

    Harlequin Darter

    Etheostoma histrio
    exclamation mark

    Endangered

    No photo available

    Hydras

    Various species in the genus Hydra
    maple leaf

    Mapleleaf

    Quadrula quadrula
    mucket

    Mucket

    Actinonaias ligamentina
    pimpleback

    Pimpleback

    Quadrula pustulosa
    pink mucket

    Pink Mucket

    Lampsilis abrupta
    exclamation mark

    Endangered

    pistolgrip

    Pistolgrip (Buckhorn)

    Tritogonia verrucosa
    pond mussel

    Pond Mussel

    Ligumia subrostrata
    round pigtoe

    Round Pigtoe

    Pleurobema sintoxia
    spike

    Spike (Ladyfinger)

    Elliptio dilatata
    threehorn wartyback

    Threehorn Wartyback

    Obliquaria reflexa
    threeridge

    Threeridge

    Amblema plicata
    Photo of a pink planarian on a rock.

    Turbellarians (Planarians; Free-Living Flatworms)

    Species in genera Dugesia, Planaria, etc.
    wabash pigtoe

    Wabash Pigtoe

    Fusconaia flava
    White crappie male, side view photo with black background

    White Crappie

    Pomoxis annularis
    white heelsplitter

    White Heelsplitter

    Lasmigona complanata