different between triggerfish vs leatherjacket

English

trigger +? fish

triggerfish (plural triggerfish or triggerfishes)

Any of several brightly coloured fish, of the family Balistidae, that inhabit tropical reefs and have an erectile spine on the dorsal fin.

leather +? jacket

leatherjacket (plural leatherjackets)

The larva of some crane flies
Any of several brightly coloured tropical fishes, of the family Balistidae, including the filefish and the triggerfish; leatherfish
Any of several Atlantic fishes, of the genus Oligoplites, that have a leathery skin; leatherjack

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