http://www.greenagribio.com/bo....tanical-pesticide/Bo Pesticide What is Rotenone Fish? Rotenone fish is an insecticide with molecular formula C23H22O6. Rotenone fish killer exists in the roots of leguminous Deervine plants produced in tropical and subtropical regions of Asia, and it is also contained in some Chinese herbal medicines such as sweet melon seeds, bitter sandalwood seeds, and roots of Kunming Spatholobus. Rotenone fish widely exists in the root bark of plants, and is a highly specific substance in toxicology. It has strong contact and stomach poisoning effects on insects, especially cabbage butterfly larvae