[8][9] This mussel is elliptical or obovate in shape and reaches a maximum length of 70 mm.

The posterior end of males protrudes slightly, while females are more rounded.

[10] Host fish species for this mussel include wounded darter (Etheostoma vulneratum), redline darter (E. rufilineatum), bluebreast darter (Etheostoma camarum), dusky darter (Percina sciera), banded sculpin (Cottus carolinae), black sculpin (Cottus baileyi), and mottled sculpin (Cottus bairdi).

[7] This mussel is known as a long term brooder, or bradytictic, meaning it spawns in late summer or fall and releases its larvae in early spring.

[4] The main threat to this species is habitat alteration such as channelization and impoundments of waterways, increased silt, and pollution.