The food of roach, Rutilus rutilus (Actinopterygii: Cypriniformes: Cyprinidae), in a biomanipulated water supply reservoir
Background.Roach, Rutilus rutilus (Linnaeus, 1758), is an omnivorous fish species that is able to utilise a range of food resources.Both juvenile and older roach can negatively affect zooplankton abundance in freshwater bodies of water; hence populations are often reduced (biomanipulated) in order to increase zooplankton populations.The aim of this