Reassessment of the generic position of the Iberian cyprinid alburnoides complex: its return to the genus Leuciscus

The generic position of the Iberian unisexual fish complex alburnoides is r eassessed based on genetic evidence of a hybrid ancestry and of a monophyle tic relationship with endemic Leuciscus taxa. There is a continuous movemen t of genes between the different forms of the complex and the main mode of reproduction is by meiotic hybridogenesis. Thus its return to the original generic position Leuciscus is recommended. (C) 1999 The Fisheries Society o f the British Isles.