David Fleetham / Close-up of the pectoral fin of a Black Durgon / Pinktail Triggerfish (Melichthys vidua). Hawaii.

Doug Perrine / Gray reef shark (Carcharhinus amblyrhynchos) juvenile swimming over reef with Bluestripe snapper (Lutjanus kasmira) shoal and Pinktail triggerfish (Melichthys vidua) behind, Mahaiula, North Kona, Hawa...

Joel Sartore / Photo Ark / Pinktail triggerfish (Melichthys vidua) portrait, Pure Aquariums. Captive, occurs in Indo-Pacific.

Joel Sartore / Photo Ark / Pinktail triggerfish (Melichthys vidua) portrait, Pure Aquariums. Captive, occurs in Indo-Pacific.

Georgette Douwma / Triggerfish composite image on black background, Arabian picassofish (Rhinecanthus assasi), Orangestriped triggerfish (Balistapus undulatus), Titon triggerfish (Balistoides viridescens) with two juven...

David Fleetham / Pinktail durgon / Pinktail triggerfish (Melichthys vidua) swimming over coral, Hawaii, Pacific Ocean.

David Fleetham / Pinktail triggerfish (Melichthys vidua). Pacific Ocean, Hawaii.