eng Oriental Scientific Publishing Company Biomedical and Pharmacology Journal 0974-6242 2015-04-26 5 2 261 272 2500 article M. Ilavazhahan 1 R. Tamilselvi 2 L. B. Sujatha 1 Department of Advanced Zoology and Biotechnology, Sir Theagaraya College, Chennai - 600 021, India. Department of Chemistry, Bharathi Women’s College, Chennai - 600 108, India. The present study evaluates toxicity of metal, ferrous sulphate and its impact on biochemical constituents like total sugars, total proteins, and total lipids in the fresh water edible carp Catla catla. Biochemical constituents weredetermined by standard biochemical procedures in the four tissues i.e., muscle, liver,brain and kidney of unexposed (Control) healthy fish and the fish exposed to 96-hr LC50 (Lethal) and sub-lethal concentration of the lethal dose for zero day, 4th day and 7th days of exposure of heavy metal, ferrous sulphate. The elevatedlevels of sugars are apparently indicative of the organism’s response to the toxicant stress. https://biomedpharmajournal.org/vol5no2/biochemical-alteration-in-themuscle-liver-kidney-and-brain-of-a-fresh-water-fish-catlacatla-ham-exposure-of-a-heavy-metal-toxicant-ferrous-sulphate/ Toxicity Heavy metal Ferroussulphate Biochemical Catlacatla