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.
After contributing to the discovery of the massive survival of ichthyosaurs during the Cretaceous, Valentin Fischer would today like to redirect his research to Cretaceous deposits rich in fossils of various types of marine reptiles that have been discovered in Russia. He is interested in studying evolutionary convergences with regard to nutrition, which gave rise to macropredators sharing common morphologies.