@ryereelfishn found a #lamprey on his #smallmouthbass on the #alleghenyriver #lampreyeel #rfinstagram #reelfishn The nonparasitic American Brook Lamprey (Lampetra appendix) has a broad range throughout the Midwest. In Pennsylvania it lives in streams in the northern section of the Allegheny River watershed and in the Genesee River and Lake Erie watersheds.
In body structure, Lampreys are primitive fish. They and the marine Hagfishes are considered to be the only living representatives of the ancient jawless fishes. Their extinct relatives, the ostracoderms, were the first vertebrates to appear in the fossil record, about 500 million years ago. In Pennsylvania, Lampreys appeared in the fossil record 280 million years ago.