Topmouth gudgeon (Pseudorasbora parva)

General data
- Main name: Topmouth gudgeon
- Climates: Subtropical, Temperate, Continental, Subpolar
- Habitat: Freshwater
- Native: Asia
- Introduced: Europe
- Distribution: Danube, Struma (Strymonas), Nestos, Maritsa (Evros), Rhine, Dnieper, View all... Amur, River Ob, Arno, Issyk-Kul lake, Vjosa
Classification
- Genus: Pseudorasbora - Topmouth gudgeons
- Family: Gobionidae - Gudgeons
- Order: Cypriniformes - Carps
- Class: Teleostei - Ray-finned fishes
- Superclass: Osteichthyes - Bony fishes