Abstract
The sublethal toxicity of sodium arsenite on histopathology of tissues such as liver, kidney and gill was investigated in freshwater teleost fish, Tilapia mossambica, exposed to 1/3rd of sublethal concentration (10ppm) of the chemical for a period of 4 and 14 days. Though, acute exposure has not resulted in death, it led to many morphological and histological variations such as histolysis, lesions, necrosis and vacuolation etc. There are many degenerative changes in the tissues studied suggestive of impairment of normal function when compared to controls.