Globally, about 100 species of frogs have been infected with a killer fungus whose identity, until recently, remained a mystery. More than 30 years of research by CSIRO and other collaborators was finally rewarded when the chytrid fungus, Batrachochytrium dentrobatidis, was identified. Scientists are now looking at management strategies, trialling anti-fungal drugs and developing a diagnostic kit, in an attempt to halt further declines in frog populations.