Author: Valenciennes, 1848
FBname: Gwyniad
Comments: Lacustrine, in open water. Spawns in January to February in shallow bays on stones and gravel. Feeds on crustaceans and insects (Ref. 59043).
  Status of threat: Threatened by degradation of water quality and introduction of <i>Gymnocephalus cernua</i>, which preys on egg and larvae. A second population is being established in Llyn Arenig (Ref. 59043).