

The Sabre Squirrelfish is bright red with white scale margins. It has a deep red spinous dorsal fin, and a vertically elongated crimson blotch behind the eye. The dorsal profile of the head is nearly straight, the lower jaw protrudes beyond the upper jaw when the mouth is closed and there is a very long preopercular spine.
The Sabre Squirrelfish grows to 45 cm in length. It is the largest of the squirrelfishes. Its common name refers to the very long preopercular spine.
This species lives in caves and crevices on coral reefs. It is found throughout the Indo-Pacific.
In Australia it is recorded from north-western Western Australia, around the tropical north and south to the southern Great Barrier Reef.
View a map of the collecting localities of specimens in the Australian Museum Fish Collection.
This species has also been called the Giant Squirrelfish and Spiny Squirrelfish.