- Caption: Common Name: crayfish, Scientific Name: Orconectes placidus, Size: 2.95” (7.5 cm) long, Location: Lilliard's Mill, Duck River, Milltown, Tennessee, river mile: ORM179.2 Contact: David Liittschwager, Natural History Photography, 120 Parnassus Avenue #1, San Francisco, CA 94117, cell: 415 531 6882, email: liittschwager@mac.com
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