The present study aimed at evaluating the apparent digestibility of rice bran, corn meal and cassava meal for grass carp (Ctenopharyngodon idella). The digestibility of nutrients of these plant-ingredients were determined using the indirect method with the incorporation of Cr2O3. Rice bran appeared to have a high digestibility of dry matter (), protein ( %) and ash ( %) for grass carp. Corn meal has also high digestibility of dry matter (), protein () and ash ().