Blue bream (Ballerus ballerus)

General data
- Main name: Blue bream
- Climates: Temperate, Continental
- Habitat: Freshwater
- Native: Europe
- Distribution: Danube, Dnieper, Northern Dvina
Classification
- Genus: Ballerus - Blue Breams
- Family: Leuciscidae - Chub family
- Order: Cypriniformes - Carps
- Class: Teleostei - Ray-finned fishes
- Superclass: Osteichthyes - Bony fishes