American eel side view photo with black background

    American Eel

    Anguilla rostrata
    Photo of a spotted fishing spider perched on the water's surface amid floating duckweed plants

    Aquatic Spiders

    Dolomedes spp., Tetragnatha spp., and others
    Photo of backswimmer, side view

    Backswimmers

    About 32 North American species in the family Notonectidae
    Photo of a belted crayfish, also called Big River crayfish.

    Belted Crayfish (Big River Crayfish)

    Faxonius harrisonii (formerly Orconectes harrisonii)
    Photo of a Big Creek crayfish.

    Big Creek Crayfish

    Faxonius peruncus (formerly Orconectes peruncus)
    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
    Bleeding shiner male in spawning colors, side view photo with black background

    Bleeding Shiner

    Luxilus zonatus
    Bluegill male in spawning colors, side view photo with black background

    Bluegill

    Lepomis macrochirus
    Brown trout female side view photo with black background

    Brown Trout

    Salmo trutta
    Gray, speckled, translucent gelatinous blob cut in half to show structure

    Bryozoans (Moss Animals)

    Freshwater species in the phylum Bryozoa
    Central stoneroller male in spawning colors, side view photo with black background

    Central Stoneroller

    Campostoma anomalum (syn. C. pullum)
    Chain pickerel side view photo with black background

    Chain Pickerel

    Esox niger
    Chestnut lamprey side view photo with black background

    Chestnut Lamprey

    Ichthyomyzon castaneus
    Common carp side view photo with black background

    Common Carp

    Cyprinus carpio
    invasive icon

    Invasive

    Common shiner side view photo with black background

    Common Shiner

    Luxilus cornutus
    Photo of crane fly larva

    Crane Fly Larvae

    There are over 500 species of crane flies in North America.
    Photo of a spothanded crayfish viewed from above on white background.

    Crayfishes

    About 36 species in Missouri
    Creek chub male in spawning colors, side view photo with black background

    Creek Chub

    Semotilus atromaculatus
    Crystal darter side view photo with black background

    Crystal Darter

    Crystallaria asprella
    exclamation mark

    Endangered

    Orangethroat darter male in spawning colors, side view photo with black background

    Darters

    Etheostoma, Percina, Ammocrypta, and Crystallaria spp.
    Photo of a devil crayfish.

    Devil Crayfish

    Lacunicambarus aff. diogenes
    Monkey Face Mussel

    Freshwater Mussels

    Bivalve molluscs in order Unionoida
    Photo of a golden crayfish viewed through the surface of creek water.

    Golden Crayfish

    Faxonius luteus (formerly Orconectes luteus)
    Golden redhorse side view photo with black background

    Golden Redhorse

    Moxostoma erythrurum
    Golden shiner male, side view photo with black background

    Golden Shiner

    Notemigonus crysoleucas
    Goldeye side view photo with black background

    Goldeye

    Hiodon alosoides
    Goldfish side view photo with black background

    Goldfish

    Carassius auratus
    Greenside darter female, side view photo with black background

    Greenside Darter

    Etheostoma blennioides
    Hornyhead chub female, side view photo with black background

    Hornyhead Chub

    Nocomis biguttatus
    Photo of Hubbs' crayfish.

    Hubbs’ Crayfish

    Cambarus hubbsi
    Hybrid striped bass, or wiper, side view photo with black background

    Hybrid Striped Bass (Wiper; Whiterock Bass)

    Morone chrysops x M. saxatilis
    No photo available

    Hydras

    Various species in the genus Hydra
    Knobfin sculpin side view photo with black background

    Knobfin Sculpin

    Cottus immaculatus
    lilliput

    Lilliput

    Toxolasma parvus
    Logperch side view photo with black background

    Logperch

    Percina caprodes
    Longear sunfish, spawning male, side view photo with black background

    Longear Sunfish

    Lepomis megalotis
    Longnose gar side view photo with black background

    Longnose Gar

    Lepisosteus osseus
    Photo of a longpincered crayfish.

    Longpincered Crayfish

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

    Midge Fly Larvae

    Nearly 1,100 species in North America
    Southern redbelly dace male in spawning colors, side view photo with black background

    Minnows

    Notropis, Cyprinella, Hybognathus, Luxilus, and others
    Mooneye side view photo with black background

    Mooneye

    Hiodon tergisus
    Mottled sculpin side view photo with black background

    Mottled Sculpin

    Cottus bairdii
    Photo of a Neosho midget crayfish.

    Neosho Midget Crayfish

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

    Niangua Darter

    Etheostoma nianguae
    exclamation mark

    Endangered

    Northern hog sucker side view photo with black background

    Northern Hog Sucker

    Hypentelium nigricans
    Northern rock bass, or goggle-eye, side view photo with black background

    Northern Rock Bass

    Ambloplites rupestris
    Photo of an Ozark crayfish.

    Ozark Crayfish

    Faxonius ozarkae (formerly Orconectes ozarkae)
    Ozark minnow female, side view photo with black background

    Ozark Minnow

    Notropis nubilus
    pink papershell

    Pink Papershell

    Potamilus ohiensis

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