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Dieren en planten

Water en land

  • Dut: Baars
  • Lat: Perca fluviatilis
  • Eng: Perch
  • Fre: Perche fluviatile
  • Ger: Barsch (Flußbarsch)
Perch, from www.sportviszone.nl

Perch

Perch is an extremely common freshwater fish. It has six to eight dark vertical stripes and two separate dorsal fins, the front one having hard spines. One finds fewer perch in ditches and small waters than in the IJsselmeer and other large waters and rivers. The average length of perch is between 20-35 centimeters. When the fish is small, it lives in schools and eats zooplankton. Fish between 10 and 15 centimeters eat invertebrates such as opossum shrimp and gammarids. Larger fish switch over to hunting their own kind or smelt. They avoid ruffe and roach as prey. Older perch live alone in deep water.

  • Reproduction

    Perch spawn from mid March till the end of April in water temperatures warmer than 8 degrees Celsius. The eggs are laid in the shape of wide jagged ribbons several eggs across, in shallow water above aquatic plants, tree roots or dead branches.

  • Distribution and habitat

    Perch is somewhat resistant to eutrophication and murky water as long as there is sufficient and large enough prey (such as opossum shrimp). It is found throughout the Netherlands. In Europe, it is found north of the Alps up to Northeastern Asia.