Silvery lower and greenish silver upper with yellowish midline fin and yellowish caudal fin. No pectoral fins. Oral disk instead of a mouth. 7 pairs of gill slits.
I couldn't tell if this lamprey was trying to make a place to lay it's eggs, or if it was in the process of dying. It just stayed right there near the bank of the river. Skinners Falls NYDEC access on the Upper Delaware Scenic & Recreational River.
about twenty in a dip in the river bed.
Lampreys (sometimes also called lamprey eels) are an order of jawless fish, the adult of which is characterized by a toothed, funnel-like sucking mouth. The common name "lamprey" is derived from lampetra, which translated from Latin means "stone licker" (lambere "to lick" + Greek πέτρα "stone").