Paroreio
Paroreio is a genus of extinct ray-finned fish belonging to the family Percopsidae. These fish lived during the Eocene epoch, primarily based on fossil evidence found in freshwater deposits. The known species of Paroreio are distinguished by features of their skeletal anatomy, particularly within the cranium and fin structures. The genus is significant to paleontologists studying the evolutionary history of percopsiform fishes and the biogeography of Eocene freshwater ecosystems in North America, where their fossils have primarily been discovered. Further research and fossil discoveries may contribute to a more comprehensive understanding of Paroreio and its relationship to other extinct and extant percopsiforms.