American eel side view photo with black background

    American Eel

    Anguilla rostrata
    Photo of an aquatic isopod in an aquarium, crawling on a rock.

    Aquatic Pillbugs and Sowbugs (Aquatic Isopods)

    Freshwater members of the crustacean order Isopoda
    Black bullhead side view photo with black background

    Black Bullhead

    Ameiurus melas
    Black crappie, male in spawning colors, side view photo with black background

    Black Crappie

    Pomoxis nigromaculatus
    Blackspotted topminnow side view photo with black background

    Blackspotted Topminnow

    Fundulus olivaceus
    butterfly

    Butterfly

    Ellipsaria lineolata
    deertoe

    Deertoe

    Truncilla truncata
    ellipse

    Ellipse and Bleedingtooth

    Venustaconcha ellipsiformis and V. pleasii
    fatmucket

    Fatmucket

    Lampsilis siliquoidea
    Flathead chub side view photo with black background

    Flathead Chub

    Platygobio gracilis
    exclamation mark

    Endangered

    fragile papershell

    Fragile Papershell

    Leptodea fragilis
    Freckled madtom side view photo with black background

    Freckled Madtom

    Noturus nocturnus
    Monkey Face Mussel

    Freshwater Mussels

    Bivalve molluscs in order Unionoida
    giant floater

    Giant Floater

    Pygandon grandis
    Photo of several prosobranch pond snails crawling on a rock.

    Gilled Aquatic Snails (Prosobranch Pond Snails)

    Over 20 Missouri species in former subclass Prosobranchia
    Photo of a deer fly larva, probably in a petri dish, on a gray background.

    Horse and Deer Fly Larvae

    Tabanus, Chrysops, and related genera
    No photo available

    Hydras

    Various species in the genus Hydra
    lilliput

    Lilliput

    Toxolasma parvus
    maple leaf

    Mapleleaf

    Quadrula quadrula
    Photograph of several mosquito larvae resting at water surface

    Mosquito Larvae

    There are about 50 species of mosquitoes in our state.
    mucket

    Mucket

    Actinonaias ligamentina
    Neosho madtom side view photo with black background

    Neosho Madtom

    Noturus placidus
    exclamation mark

    Endangered

    pimpleback

    Pimpleback

    Quadrula pustulosa
    pistolgrip

    Pistolgrip (Buckhorn)

    Tritogonia verrucosa
    pond mussel

    Pond Mussel

    Ligumia subrostrata
    Quillback side view photo with black background

    Quillback

    Carpiodes cyprinus
    Redfin darter side view photo with black background

    Redfin Darter

    Etheostoma whipplei
    exclamation mark

    Endangered

    River carpsucker side view photo with black background

    River Carpsucker

    Carpiodes carpio
    round pigtoe

    Round Pigtoe

    Pleurobema sintoxia
    Photo of amphipod on a rock

    Scuds and Sideswimmers (Amphipods)

    Species in the crustacean order Amphipoda
    Shorthead redhorse side view photo with black background

    Shorthead Redhorse

    Moxostoma macrolepidotum
    Shortnose gar side view photo with black background

    Shortnose Gar

    Lepisosteus platostomus
    Spectaclecase

    Spectaclecase

    Cumberlandia monodonta
    spike

    Spike (Ladyfinger)

    Elliptio dilatata
    Stonecat side view photo with black background

    Stonecat

    Noturus flavus
    Tadpole madtom female, side view photo with black background

    Tadpole Madtom

    Noturus gyrinus
    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
    wartyback

    Wartyback

    Quadrula nodulata
    Photo of a single water strider

    Water Striders

    Aquarius remigis; also species in the genus Gerris
    White crappie male, side view photo with black background

    White Crappie

    Pomoxis annularis
    white heelsplitter

    White Heelsplitter

    Lasmigona complanata
    Yellow bullhead side view photo with black background

    Yellow Bullhead

    Ameiurus natalis