Perca fluviatilis, commonly known as the European perch, is a freshwater fish found across Europe and northern Asia. It features a distinctive olive-green body with dark vertical stripes and bright red or orange fins. This species is known for its adaptability to various freshwater habitats, including lakes, rivers, and reservoirs. European perch are opportunistic predators, feeding on smaller fish, insects, and crustaceans, playing a vital role in controlling aquatic populations.

Perca fluviatilis, commonly known as the European perch, is native to Europe and northern Asia. Its geographical distribution extends across the continent from the British Isles in the west to eastern Russia, and from Scandinavia in the north down through central Europe and parts of the Balkans.

The European perch typically inhabits freshwater environments, including lakes, rivers, and reservoirs. It prefers clear, slow-moving or still waters with abundant vegetation, which provide shelter and feeding opportunities. The species thrives in temperate climates, with water temperatures ranging from 4°C to 22°C.

Perca fluviatilis occupies a niche as a mid-level predator within its ecosystem. It feeds on a variety of prey, including smaller fish, invertebrates, and zooplankton, playing a crucial role in maintaining the balance of aquatic ecosystems. The species is known for its adaptability to different freshwater habitats, which allows it to thrive across a wide geographical range.