eng Oriental Scientific Publishing Company Biomedical and Pharmacology Journal 0974-6242 2015-04-27 6 1 99 105 2632 article M.T. Jagannath Bose 1 M. Ilavazhahan 1 R. TamilselvI 2 M.Viswanathan 1 Department of Zoology, Sir Theagaraya College, Chennai - 600 021, India. Department of Chemistry, Bharathi Women’s College, Chennai - 600 108, India. Histopathological effect of acute concentrations of heavy metals such as copper, ferroussulphate were studied. Results revealed extensive histopathological abnormalities in the internal structure of gill and brain of Catlacatla exposed to copper and ferrous sulphate in contrast to that of control fish, showing the severity of heavy metal toxicity. https://biomedpharmajournal.org/vol6no1/effect-of-heavy-metals-on-the-histopathology-of-gills-and-brain-of-fresh-water-fish-catla-catla/ Catlacatla Copper Ferrous Sulphate Histopathology Gills Brain