2-Phenoxyethanol is an oily liquid with slight solubility that is added directly to the water. Anesthetic concentrations range from 0.08-0.5 ml/L. Unfortunately, this chemical has a narrow margin of safety and sublethal exposure may cause liver and kidney damage (Summerfelt and Smith 1990). For these reasons, 2-phenoxyethanol is not a desirable anesthetic for use in fish.