1991/2 – Records of Fish Kills in Inland Waters of NSW and Qld in Relation to Cotton Pesticides. Fish kills associated with insecticide Endosulfan used primarily on cotton crops. Endosulfan recorded in the Gwydir River at Bragreen at 3ug/L. Source: Wetlands Australia 1998.

https://ojs.library.unsw.edu.au/index.php/wetlands/article/viewFile/192/198