Herein we detail a predation event on Orconectes cristavarius (Spiny Stream Crayfish) by Dolomedes scriptus (Striped Fishing Spider). On 12 July 2015, we discovered a female Striped Fishing Spider along the banks of Knox Creek, Buckhannon County, VA, feeding on a young-of-the-year Spiny Stream Crayfish. The spider had ingested the majority of the crayfish's abdomen at the time of discovery, and had used silk to anchor the crayfish to the undersurface of the rock where feeding was taking place. We discuss the possible role of crayfish in the diet of Dolomedes spiders and provide a detailed description of the spider 's microhabitat.