Research Professor at CSIC. I lead the Biodiversity and Evolutionary Biology research group at MNCN-CSIC, one of the largest in the field of natural resources (22 PIs). The group was evaluated as an A-grade excellence group. I have also served as the Deputy Director of Collections at MNCN-CSIC since 2017. I am the scientist responsible for Spain in the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES). I have served as the Vice President of the Man and the Biosphere Program (MAB, UNESCO) in Spain and am currently a member of its scientific committee. I am a member of the Scientific Committee of the Committee on Wild Flora and Fauna (MITECO). I am the President of the Trashumancia y Naturaleza Foundation and a recipient of the FBBVA Biodiversity Conservation Award in 2014. I have authored 318 scientific publications, My research focuses on the inventory, classification, and description of biodiversity in continental ichthyofauna. Additionally, I delve into understanding the evolutionary processes that give rise to them and the mechanisms that lead to their diversification. Considering that the biodiversity crisis affects the organisms under study, I have also conducted research in conservation genetics with different organisms. The inventory and classification of biodiversity have been carried out using an integrative taxonomy based on genetics, comparative anatomy, traditional and geometric morphology, etc.