Department of Environmental Conservation

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Silver Lamprey

Image of a Silver Lamprey

Ichthyomyzon unicuspis

Silver Lamprey occurs as ammocoetes in medium-sized and larger streams with clean sand and gravel. Parasitic adults travel to a wider range of waters. It is native to a total of six north and western watersheds. It has also become established in the Upper and Lower Hudson. Improved sampling techniques may explain the greater number of collections made in more recent surveys.

Silver Lamprey Fish Atlas Map