Kresoxim-methyl is a fungicide of the strobilurin group known to affect aquatic and terrestrial environments. The objective of this work was to determine the toxicity of Kresoxim-methyl on seven bioindicators of environmental quality. Ecotoxicological bioassays were performed with the seven models using standardized protocols. Kresoxim-methyl affected the mortality of Artemia franciscana was-1 58 mg ai•L at 48 h of exposure. In Carassius auratus at 26 days, was observed that the mortality was