Photo of backswimmer, side view

    Backswimmers

    About 32 North American species in the family Notonectidae
    Black crappie, male in spawning colors, side view photo with black background

    Black Crappie

    Pomoxis nigromaculatus
    Bluegill male in spawning colors, side view photo with black background

    Bluegill

    Lepomis macrochirus
    Gray, speckled, translucent gelatinous blob cut in half to show structure

    Bryozoans (Moss Animals)

    Freshwater species in the phylum Bryozoa
    Photo of crane fly larva

    Crane Fly Larvae

    There are over 500 species of crane flies in North America.
    Monkey Face Mussel

    Freshwater Mussels

    Bivalve molluscs in order Unionoida
    Golden shiner male, side view photo with black background

    Golden Shiner

    Notemigonus crysoleucas
    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
    lilliput

    Lilliput

    Toxolasma parvus
    Longear sunfish, spawning male, side view photo with black background

    Longear Sunfish

    Lepomis megalotis
    Photo of a midge fly larva crawling on a rock in an aquarium

    Midge Fly Larvae

    Nearly 1,100 species in North America
    Northern rock bass, or goggle-eye, side view photo with black background

    Northern Rock Bass (Goggle-Eye)

    Ambloplites rupestris
    pink papershell

    Pink Papershell

    Potamilus ohiensis
    Redear sunfish side view photo with black background

    Redear Sunfish

    Lepomis microlophus
    Striped bass side view photo with black background

    Striped Bass

    Morone saxatilis
    Photo of a pink planarian on a rock.

    Turbellarians (Planarians; Free-Living Flatworms)

    Species in genera Dugesia, Planaria, etc.
    Photo of a northern, also called virile, crayfish.

    Virile Crayfish (Northern Crayfish)

    Faxonius virilis (formerly Oronectes virilis)
    White sucker side view photo with black background

    White Sucker

    Catostomus commersoni