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

Aquatic Spiders

Dolomedes spp., Tetragnatha spp., and others

Black bullhead side view photo with black background

Black Bullhead

Ameiurus melas

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

Bryozoans (Moss Animals)

Freshwater species in the phylum Bryozoa

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

Darters

Etheostoma, Percina, Ammocrypta, and Crystallaria spp.

Monkey Face Mussel

Freshwater Mussels

Bivalve molluscs in order Unionoida

Goldfish side view photo with black background

Goldfish

Carassius auratus

No photo available

Hydras

Various species in the genus Hydra

Southern redbelly dace male in spawning colors, side view photo with black background

Minnows

Notropis, Cyprinella, Hybognathus, Luxilus, and others

Photo of a ramshorn snail on a wet rock.

Ramshorn Snails

Gyraulus, Helisoma, Menetus, Micromenetus, Planorbula spp.

Photo of stonefly naiad on a rock underwater

Stonefly Larvae

There are hundreds of species in North America

Photo of a pink planarian on a rock.

Turbellarians (Planarians; Free-Living Flatworms)

Species in genera Dugesia, Planaria, etc.