Perca is a genus of fish commonly known as perch, which includes several species found in freshwater and brackish environments. These fish are characterized by their elongated bodies, spiny dorsal fins, and distinctive vertical stripes. The most well-known species is the European perch (Perca fluviatilis), which is popular among anglers and is often found in lakes and rivers across Europe and Asia. Perch are carnivorous and primarily feed on smaller fish, insects, and crustaceans. They are social creatures, often found in schools, and can adapt to various habitats. Due to their abundance and importance in local ecosystems, perch are also significant for recreational fishing and commercial fisheries.