Labeo rohita is a common Indian main carp species in the carp polyculture exercise. It is recognized as the water column feeder which feeds on the plankton. Rohu is basically an herbivorous column feeder in the childish and adult stages, choosing algae and the submerged vegetation. Under normal condition, in the fingerling stage, it desires zooplankton, with phytoplankton as the secondary food. At this phase it revealed a strong optimistic selection for all that zooplanktonic organisms and lesser phytoplankton. Adults display a strong adverse selection for all that zooplanktonic organisms and the optimistic choice for most phytoplanktonic creatures. Conversely, in the periphytic atmosphere, it consumes sub-periphytic organisms existing in the vicinity to substrate. In the conclusion, it is approved that L. rohita shows dissimilar feeding strategy throughout its growth from the fingerling to adult and as well from the planktonic to periphytic situation. Espousal of a fish culture plan rendering to its disparity feeding strategy would exploit in converting the naturally accessible resources to the fish biomass particularly in the polyculture methods.