Editing Reef triggerfish (section)

==Description==

It has a small second dorsal spine which is used to lock its main spine into an upright position. When sheltering in a small crevice, this locking helps protect the fish against extraction by a predator.

The reef triggerfish is characterized by having a noticeably large snout and blue lips that resemble that of a pig’s snout. It has strong teeth and a terminal mouth which help aid in scraping food off surfaces. Along the dorsal side and anterior end of the fish, it has an orange-brown coloration and a white belly. The reef triggerfish has 3 dorsal spines, 22–25 dorsal rays, no anal spines, and 20–22 anal soft rays. The soft dorsal fins, anal fins, and pectoral fins have a pale white coloration to it. The caudal fin has a cloudy murky color.<ref>{{cite web |url=https://fishbase.se/summary/Rhinecanthus-rectangulus.html |title =Rhinecanthus rectangulus |access-date=November 8, 2024}}</ref>

The reef triggerfish is commonly confused with its two closest living relatives the lagoon triggerfish and picasso triggerfish.