- Dut: Pos (jood, koeposje, post, schele jongen, schele jood, schele pos, stekelpos)
- Lat: Gymnocephalus cernuus
- Eng: Ruffe
- Ger: Kaulbarsch
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- Ruffe, Photo via http://www.taucher.li
Ruffe
Ruffe is a freshwater fish commonly found in the IJsselmeer and other large open waters and canals in the Netherlands. It can grow up to 25 centimeters in length. During the day, it hunts in the water column for freshwater plankton, such as insect larvae and water fleas. It rests on the bottom at night. During spawning season from around April till June, ruffes form large schools. They spawn in shallow water. Together with roach, ruffe is the most important food source for cormorants in the IJsselmeer region.
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