Valentin Fischer studied geology at the University of Liege. For the purposes of his dissertation he interested himself in the fossils of ichthyosaurs that were discovered in the South of France. He was to discover that these specimens seemed to have a wide diversity, some millions of years before the presumed extinction of the group. He intensified his research while studying for a doctorate which was financed by a grant from the FNRS, and which he presented at the University of Liege in March 2013; today he is a researcher at the Department of Geology of the University of Liege and at the Belgian Royal Institute of Natural Sciences, in Brussels.
Having been awarded his doctorate Valentin Fischer followed post-doctoral studies (Newton International Fellow) at the University of Oxford while at the same time being a researcher at the FNRS and the beneficiary of a grant from the Vocatio Foundation. On October 1st 2015, he was appointed as a lecturer at the University of Liege. Since then, he has been head of the EDDy lab (Evolution and Diversity Dynamics lab) in the geology department of the University of Liege.