Don whitefin gudgeon (Romanogobio tanaiticus)

General data
- Main name: Don whitefin gudgeon
- Habitat: Freshwater
Classification
- Genus: Romanogobio - Gudgeons
- Family: Gobionidae - Gudgeons
- Order: Cypriniformes - Carps
- Class: Teleostei - Ray-finned fishes
- Superclass: Osteichthyes - Bony fishes