Michel Roggo / European River lamprey (Lampetra fluviatilis) Larvaes, Sweden, 1998

Michel Roggo / River lamprey (Lampetra fluviatilis) sucker with disk-shaped mouth with horny teeth, Europe, Captive

Michel Roggo / European River lamprey (Lampetra fluviatilis) Europe

Willem Kolvoort / European river lamprey (Lampetra fluviatilis) looking for mating place in brook, Holland

Willem Kolvoort / European river lamprey (Lampetra fluviatilis) male and female pair preparing to mate, Holland

Willem Kolvoort / European river lamprey (Lampetra fluviatilis) mating, male twists body round female to fertilise eggs which she is spawning, Kauguri Canal, Kemeri NP, Latvia

Willem Kolvoort / European river lamprey {Lampreta fluviatilis} Kaugari canal, Kemeri NP, Latvia. The seven holes behind the eye are the outlets of the gills.

Willem Kolvoort / European river lamprey (Lampetra fluviatilis) female attached by its jaw sucker to a stone in the Kauguri Canal, Kemeri NP, Latvia, during the mating season.

Willem Kolvoort / European river lamprey (Lampetra fluviatilis) male preparing to mate with female which attached by its jaw sucker to stone in the Kauguri Canal, Kemeri NP, Latvia