Residues of endosulfan in wild fish from cotton growing areas in New South Wales, Australia

Endosulfan residues were determined in fish from cotton growing areas in N.S.W. Fish collected in summer 1988 contained significantly higher levels of endosulfan residue than fish collected during other seasons. The residues were dependent on the delivery of the pesticide to the aquatic environment, affected more by rainfalls and floods than by application season.