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.
SPIKE
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SPIKE. This species of mussel has a shell whose surface is smooth. It is greenish brown with faint green rays visible on small shells becoming dark brown to black in adults. The mussel may reach a length of 5 inches.
Its habitat is small and limited to large streams and occasionally lakes in mud or gravel.