The permit's genus name,
Trachinotus comes from a fusion of the Greek words '
(), which means "rough", and ' (), meaning "back". The
species name for the permit, '''', is a Latin adjective, which roughly means "armed with
scythes". This serves as a reference to the permit's
dorsal fin that occasionally protrudes from the water when
schools of permit feed near the surface. "Permit", the common name, may be an irregular borrowing from
Spanish palometa, probably from a Doric variant of
Ancient Greek πηλαμύς (
pēlamús, "young tuna"). ==Anatomy and morphology==