any of several pikelike fishes of the perch family, especially the walleye, Stizostedion vitreum.
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British Dictionary definitions for pikeperch
any of various pikelike freshwater teleost fishes of the genera Stizostedion (or Lucioperca), such as S. lucioperca of Europe: family Percidae (perches)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012