European river lamprey (Lampetra fluviatilis)

General data
- Main name: European river lamprey
- Climates: Temperate, Continental
- Habitat: Freshwater
- Native: Europe
- Distribution: Danube, Rhine, Loire, Daugava (Western Dvina), Narva, Gauja
Classification
- Genus: Lampetra - Lampetra
- Family: Petromyzontidae - Lampreys
- Order: Petromyzontiformes - Lampreys
- Class: Petromyzonti - Lampreys
- Superclass: Agnatha - Jawless fishes