Ivan Rehák is a zoological advisor at Prague Zoo. He lectures Batrachology and Herpetology and Ecology of Amphibians and Reptiles at Charles University in Prague. He deals with herpetology, batrachology, conservation of amphibians and reptiles and their population management. He is – among others – President of the Czech Herpetological Society, Chairman of the Reptile Taxon Advisory Group of the European Association of Zoos and Aquaria, member of the Research Committee of the European Association of Zoos and Aquaria, the Conservation and Environmental Sustainability Committee of the World Association of Zoos and Aquariums and the Species Survival Commission of the International Union for Conservation of Nature.