Encyclopedia Dubuque
"Encyclopedia Dubuque is the online authority for all things Dubuque, written by the people who know the city best.”
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Affiliated with the Local History Network of the State Historical Society of Iowa, and the Iowa Museum Association.
PIMPLEBACK
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PIMPLEBACK. Known by such other names as wartyback or warty pigtoe, this mussel has a rounded shell with a green strip and a dense cover of knobs. It is considered common to abundant and tends to adjust well to impounded water. Hosts for the young include brown bullhead, black bullhead, channel and flathead catfishes.
Its favorite habitat is medium to large rivers in mud, sand, or gravel.