River Lamprey (Lampetra ayresi)

Identification: Body is elongate and cylindrical to the dorsal fins. Body is dark brown to lead-grey on the upper sides and dorsal surface, silvery around the head, gill openings and lower sides, and white on the ventral surface. Tooth bar immediately above mouth has two teeth. Center pair of lateral teeth have three points, sharp tooth on center of tongue. Adults usually 311 mm.