Description:

Dorsal spines: 3; Dorsal rays: 24-27; Anal spines: 0; Anal rays: 22-25.

Adults are pinkish to grey with a cross-hatched pattern on the sides of the body, formed by the pale margins of the large scales, and yellow fin margins. Deep groove in 
front of the eye and shallow horizontal grooves on upper cheek and orange-yellow face. Caudal fin emarginate or double emarginate with medium length lobes. Juveniles 
are yellowish with small black spots, dark saddle-like markings crossing the back and rounded caudal fin.
 

Maturity: Lm unknown. Range unknown Max Length: 60cm TL.

Occurs in coral reefs and inshore waters (depth 2-50m) often in silty habitats. Generally solitary or in pairs, juveniles may form small aggregations. Feeds on tips of 
coral branches, gastropods, crustaceans, foraminifera, tunicates and sea urchins. Males establish territories with nest sites and egg chambers at traditional spawning 
grounds. Females select a male for mating. Up to 430,000 or more eggs may be deposited in a spongy fist-sized cluster weighted down with pieces of rubble. Nest-guarding 
females are aggressive.
 

This species is not protected or subject to fishery regulations. It is caught in the hand line fishery, but is a rare component of the catch. 
 

Froese, R. & D. Pauly. Eds. (2018). FishBase  https://www.fishbase.de/summary/pseudobalistes-flavimarginatus  (04/11/18)
McGrouther, M. (2013). Yellowmargin Triggerfish, Pseudobalistes flavimarginatus (Rüppell, 1829). Australian Museum. https://australianmuseum.net.au/yellowmargin-triggerfish-pseudobalistes-flavimarginatus  (04/11/18).
Smith, M & Heemstra, P. Eds. (1999). Smiths’ Sea Fishes Edition 6. Springer-Verlag Berlin Heidelberg 10.1007/978-3-642-82858-4

Nevill, J.E.G. (2019). Pseudobalistes flavimarginatus, Yellowmargin triggerfish. Seychelles Seatizens. www.seatizens.sc. https://seatizens.sc/species/pseudobalistes-flavimarginatus-ruppell-1829/  (edited 19/06/22).