Scardinius

Scardinius is a genus of freshwater fish belonging to the family Cyprinidae, commonly known as minnows and carps. The genus is native to Europe and western Asia. Members of the genus Scardinius are typically small to medium-sized fish, characterized by their elongated bodies, forked tails, and relatively small scales. They inhabit a variety of freshwater environments, including lakes, rivers, and streams, often preferring areas with abundant aquatic vegetation.

The most well-known species within this genus is Scardinius erythrophthalmus, the common rudd. The rudd is widespread across Europe and has been introduced to other regions. It is often found in still or slow-moving waters and can be recognized by its reddish fins, particularly the pelvic and anal fins, and its golden-bronze body. Other species in the genus include Scardinius graecus (Greek rudd) and Scardinius scardafa, found in southeastern Europe and the Balkans, respectively.

Scardinius species are omnivorous, feeding on a diet of insects, crustaceans, mollusks, and plant matter. They play an important role in their ecosystems as both prey for larger fish and birds and as consumers that help manage aquatic vegetation. While generally not of major commercial importance, some species are caught for sport fishing and occasionally for consumption. Their populations can be affected by habitat degradation, pollution, and competition from introduced species.