Perca fluviatilis, commonly known as the European perch, is a freshwater fish found in rivers, lakes, and ponds across Europe and parts of Asia. It has a distinctive greenish body with vertical black stripes and can grow up to 50 centimeters in length. This species is popular among anglers due to its fighting ability and is often sought after for sport fishing. The European perch primarily feeds on smaller fish, invertebrates, and zooplankton. It plays an important role in aquatic ecosystems as both a predator and prey. Additionally, it is a key species in the aquaculture industry, contributing to local economies and food supplies.