Guiyu, a fascinating fish from the Silurian period, swims into view as an ancient representative of the aquatic world. Discovered in China, this prehistoric fish is a lobe-finned fish, a group considered pivotal in the evolution of vertebrates.With its lobed pectoral fins and a distinct skull structure, Guiyu provides valuable insights into the early stages of vertebrate evolution. The discovery of Guiyu and other lobe-finned fish fossils has contributed significantly to our understanding of the transition from fish to tetrapods.