![Freshwater fish isolated on white background closeup. Balon's ruffe, also known as the Danube ruffe is a species of perch, type species: Gymnocephalus baloni. Stock Photo | Adobe Stock Freshwater fish isolated on white background closeup. Balon's ruffe, also known as the Danube ruffe is a species of perch, type species: Gymnocephalus baloni. Stock Photo | Adobe Stock](https://t3.ftcdn.net/jpg/03/18/34/64/360_F_318346419_0XxZcrJzDm1nhO7ILUC8nuCW597sXt2O.jpg)
Freshwater fish isolated on white background closeup. Balon's ruffe, also known as the Danube ruffe is a species of perch, type species: Gymnocephalus baloni. Stock Photo | Adobe Stock
![Balon's Ruffe, Danube Ruffe Gymnocephalus baloni, above pebbles, Germany, Niederbayern, Stock Photo, Picture And Rights Managed Image. Pic. BWI-BLWS178445 | agefotostock Balon's Ruffe, Danube Ruffe Gymnocephalus baloni, above pebbles, Germany, Niederbayern, Stock Photo, Picture And Rights Managed Image. Pic. BWI-BLWS178445 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/3559ce54f49932be264e7100c0ffe80e/bwi-blws178445.jpg)
Balon's Ruffe, Danube Ruffe Gymnocephalus baloni, above pebbles, Germany, Niederbayern, Stock Photo, Picture And Rights Managed Image. Pic. BWI-BLWS178445 | agefotostock
![Balon's Ruffe, Danube Ruffe (Gymnocephalus baloni), swimming, Stock Photo, Picture And Rights Managed Image. Pic. BWI-BS419063 | agefotostock Balon's Ruffe, Danube Ruffe (Gymnocephalus baloni), swimming, Stock Photo, Picture And Rights Managed Image. Pic. BWI-BS419063 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/0e483e0c22fe1e074058424f8713aa64/bwi-bs419063.jpg)
Balon's Ruffe, Danube Ruffe (Gymnocephalus baloni), swimming, Stock Photo, Picture And Rights Managed Image. Pic. BWI-BS419063 | agefotostock
![Photo of Gymnocephalus baloni specimen from the upper reaches of the... | Download Scientific Diagram Photo of Gymnocephalus baloni specimen from the upper reaches of the... | Download Scientific Diagram](https://www.researchgate.net/publication/316359483/figure/fig1/AS:485944508850176@1492869607070/Photo-of-Gymnocephalus-baloni-specimen-from-the-upper-reaches-of-the-Dnipro.png)
Photo of Gymnocephalus baloni specimen from the upper reaches of the... | Download Scientific Diagram
![Balon's Ruffe, Danube Ruffe (Gymnocephalus baloni), over gravel ground, Germany, Bavaria, Danube, Passau Stock Photo - Alamy Balon's Ruffe, Danube Ruffe (Gymnocephalus baloni), over gravel ground, Germany, Bavaria, Danube, Passau Stock Photo - Alamy](https://c8.alamy.com/comp/CNWG7T/balons-ruffe-danube-ruffe-gymnocephalus-baloni-over-gravel-ground-CNWG7T.jpg)