Diel feeding periodicity, daily ration and relative food consumption in some fish populations in three reservoirs of Sri LankaWasantha S. Weliange, Upali S. Amarasinghe, Jacques Moreau and Maria Concepcion VillanuevaAquat. Living Resour., 19 3 (2006) 229-237DOI: https://doi.org/10.1051/alr:2006023