Photo of a golden crayfish viewed through the surface of creek water.

    Golden Crayfish

    Faxonius luteus (formerly Orconectes luteus)
    Image of a golden redhorse fish

    Golden Redhorse

    Moxostoma erythrurum
    Image of a golden shiner

    Golden Shiner

    Notemigonus crysoleucas
    No photo available

    Goldstripe Darter

    Etheostoma parvipinne
    exclamation mark

    Endangered

    Color illustration of grass pickerel, a long, narrow fish

    Grass Pickerel

    Esox americanus
    Image of green sunfish

    Green Sunfish

    Lepomis cyanellus
    Image of a greenside darter fish

    Greenside Darter

    Etheostoma blennioides
    Photo of hellgrammite

    Hellgrammite

    Corydalus cornutus
    Image of a hornyhead chub fish

    Hornyhead Chub

    Nocomis biguttatus
    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
    Photo of a horsehair worm in an aquarium

    Horsehair Worms

    About 350 species scientifically described.
    Photo of Hubbs' crayfish.

    Hubbs’ Crayfish

    Cambarus hubbsi
    Image of hybrid striped bass or "wiper"

    Hybrid Striped Bass (Wiper; Whiterock Bass)

    Morone chrysops x M. saxatilis
    No photo available

    Hydras

    Various species in the genus Hydra
    Image of a Johnny darter fish

    Johnny Darter

    Etheostoma nigrum
    Illustration of a largemouth bass

    Largemouth Bass

    Micropterous salmoides
    lilliput

    Lilliput

    Toxolasma parvus
    Image of a logperch

    Logperch

    Percina caprodes
    Illustration of a male longear sunfish

    Longear Sunfish

    Lepomis megalotis
    No photo available

    Longnose Darter

    Percina nasuta
    exclamation mark

    Endangered

    Image of a longnose gar fish

    Longnose Gar

    Lepisosteus osseus
    Photo of a longpincered crayfish.

    Longpincered Crayfish

    Faxonius longidigitus (formerly Orconectes longidigitus)
    Photo of pulmonate snail crawling on rock

    Lunged Aquatic Snails (Pulmonate Pond Snails)

    Over 30 Missouri species in former subclass Pulmonata
    Photo of a Mammoth Spring crayfish.

    Mammoth Spring Crayfish

    Faxonius marchandi (formerly Orconectes marchandi)
    Photo of a mayfly naiad crawling on rock underwater

    Mayfly Larvae

    There are hundreds of species in North America.
    Meek's Crayfish

    Meek’s Crayfish

    Faxonius meeki (formerly Orconectes meeki)
    Photo of a midge fly larva crawling on a rock in an aquarium

    Midge Fly Larvae

    Nearly 1,100 species in North America
    monkeyface

    Monkeyface

    Quadrula metanevra
    Photograph of several mosquito larvae resting at water surface

    Mosquito Larvae

    There are about 50 species of mosquitoes in our state.
    Color illustration of Mountain Madtom

    Mountain Madtom

    Noturus eleutherus
    exclamation mark

    Endangered

    mucket

    Mucket

    Actinonaias ligamentina
    Neosho Madtom

    Neosho Madtom

    Noturus placidus
    exclamation mark

    Endangered

    Photo of a Neosho midget crayfish.

    Neosho Midget Crayfish

    Faxonius macrus (formerly Orconectes macrus)
    Illustration of a Niangua darter

    Niangua Darter

    Etheostoma nianguae
    exclamation mark

    Endangered

    Illustration of a northern brook lamprey

    Northern Brook Lamprey

    Ichthyomyzon fossor
    Image of a northern hogsucker

    Northern Hogsucker

    Hypentelium nigricans
    Image of a northern rock bass

    Northern Rock Bass (Goggle-Eye)

    Ambloplites rupestris
    Image of a Northern studfish

    Northern Studfish

    Fundulus catenatus
    Illustration of an orangethroat darter

    Orangethroat Darter

    Etheostoma spectabile
    Photo of an Ozark crayfish.

    Ozark Crayfish

    Faxonius ozarkae (formerly Orconectes ozarkae)
    ozark minnow

    Ozark Minnow

    Notropis nubilus
    pimpleback

    Pimpleback

    Quadrula pustulosa
    pink heelsplitter

    Pink Heelsplitter

    Potamilus alatus
    pink mucket

    Pink Mucket

    Lampsilis abrupta
    exclamation mark

    Endangered

    pink papershell

    Pink Papershell

    Potamilus ohiensis
    pistolgrip

    Pistolgrip (Buckhorn)

    Tritogonia verrucosa
    plain pocketbook

    Plain Pocketbook

    Lampsilis cardium
    pond mussel

    Pond Mussel

    Ligumia subrostrata
    Photo of a predaceous diving beetle

    Predaceous Diving Beetles (Water Tigers)

    Species in the beetle family Dytiscidae
    Photograph of Purple Wartyback freshwater mussel shell exterior view

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