Gymnocephalus
The genus *Gymnocephalus* comprises a group of freshwater fish belonging to the family Percidae, commonly known as perches. These species are native to Europe and Asia, primarily inhabiting lakes, rivers, and ponds with clear, well-oxygenated water. The genus is characterized by its slender, elongated bodies, large eyes, and distinctive dorsal fins, which are divided into two sections: a spiny anterior portion and a soft-rayed posterior portion.
The most well-known species within this genus is the ruffe (*Gymnocephalus cernua*), a small, bottom-dwelling fish
*Gymnocephalus* species play an ecological role in their habitats, helping regulate prey populations and serving as
These fish are valued by anglers for their fighting spirit and flavorful flesh, though their popularity varies