Also known as Leatherjacket, Rough Leatherjacket, Triggerfish, Triggerfish Durgon, Unicorn Leatherjacket, Unicorn Leatherjacket Filefish, Yellow-finned Leatherjacket.
Found singly, pairs or in small schools, under floating debris, over shallow water drop-offs and sand flats, close to deeper waters. Varies in colour with age.
They feed on detritus and benthic invertebrates.
Juveniles often close to large sea jellies
Length - 75cm
Depth - 1-80m
Filefish can alter their colour and pattern to match their surrounds and so deter predators.
Although closely related to the Triggerfish, their "trigger spine" cannot be locked into place. Ref: https://www.fishbase.se/summary/Aluterus-monoceros