Queensland State Archives posted a photo:
Artwork by Frank Olsen.
Easily recognisable by its colouration, this small sized fish is also known as the Clown Triggerfish and is widely distributed throughout the tropical and subtropical waters of the Indian Ocean until the western Pacific Ocean, and also the Caribbean.
Most commonly found along external reef slopes with clear water, in Australia it is known from the offshore reefs of north-western Western Australia and from the northern Great Barrier Reef to northern New South Wales.
The triggerfish has a diurnal activity, is solitary and defends a territory. It can be very aggressive with other fish and congeners. The first long dorsal spine when erected is used to impress and opponent or to avoid a predator.
Information from Australian Museum and Wikipedia.
Queensland State Archives, Digital Image ID 6189