摘要：Trichlorfon is a toxic pollutant, which adversely affects the fauna of aquatic ecosystems. They enter in the body of organisms either directly or through food chain.The aim of the present study was to assess acute toxicity of this chemical on food fish H.fosssilis which was exposed to Trichlorfon to determine LC50 values for 24,48,72and 96 hours. The mortality data was analyzed by Finneys Probit Analysis and was found to be 0.4,0.8,1.6,3.2and 6.4mg/L respectively and the present work was undertaken to evalute the effect of trichlorfon on acute toxicity level of fish H.fossilis.
