Pilot fish
The pilot fish is a carnivorous fish of the trevally, or jackfish family, Carangidae. It is widely distributed and lives in warm or tropical open seas. Wikipedia
Scientific name: Naucrates ductor
Class: Actinopterygii
Family: Carangidae
Genus: Naucrates; Rafinesque, 1810
Kingdom: Animalia
Order: Carangiformes
Phylum: Chordata