6316 Zingel asper (Linnaeus, 1758) Percidae Perches Luciopercinae Perciformes/Percoidei Teleostei Rhone streber Europe: Rhône drainage, except Lake Geneva basin (France, Switzerland). Originaly widespread, but following habitat alterations, distribution is now much fragmented and restricted. Main subsisting populations in the middle Doubs (France, Switzerland) and Durance and Ardeche (southern France).