- leatherjacket, leatherfish - any of several brightly colored tropical filefishes
--1 is a kind of filefish
--1 is a member of Monocanthus, genus Monocanthus - leatherjacket, leatherjack - any of several New World tropical fishes having tiny embedded scales
--2 is a kind of jack
--2 is a member of Oligoplites, genus Oligoplites - leatherjacket - tough-skinned larva of certain crane flies
--3 is a kind of grub