Sterlet (Acipenser ruthenus)

General data
- Main name: Sterlet
- Climates: Temperate, Continental, Subpolar
- Habitat: Freshwater
- Native: Europe, Asia
- Distribution: Danube, Caspian Sea, Volga, Dnieper, Yenisey, River Ob, View all... Mezen, Northern Dvina
Classification
- Genus: Acipenser - Greater sturgeons
- Family: Acipenseridae - Sturgeons
- Order: Acipenseriformes - Sturgeons and Paddlefish
- Class: Chondrostei - Sturgeons
- Superclass: Osteichthyes - Bony fishes