Ductor

Ductor is an extinct genus of prehistoric bony fish that lived from the early to middle Eocene. Fossils have been found in Monte Bolca.
In life, species of "Ductor" would have resembled pilot fish, though, they are more closely related to the jackfish. Some experts place "Ductor" into its own family, "Ductoridae," while others place the genus within the closely related Carangidae.