The current research was conducted with the aim to investigate rate of chromium accumulation in various tissues commercially valuable freshwater fish, Grass Carp, Ctenopharyngodon idella. Investigation included skin, muscles, liver, swim bladder, intestine, and gills fish. For this purpose, fish were exposed sub lethal concentration hexavalent form potassium dichromate a dose 120 mg/L for 40, 2...

32 thousands of juveniles grass carp Ctenopharyngodon idella were reared in Fadak fish farm about 15 g. They transferred from culture station Marine Science Center and spread equally four ponds each 8.5 donum. The density was 940 /donum the period 15/ May to December 2007. Total weight for nearest milligram taken monthly. Fishes fed daily with green alfalfa as a main food item rate 8-15% body a...