When this species first appeared in captivity more than 50 years ago, it created a sensation, and for years was known as “the most expensive aquarium fish”. Since the 1980s, it has been more frequently imported, but remains very popular. Unlike the Red-toothed triggerfish, it is an antisocial species that is never found in large numbers anywhere in its Indian Ocean and Indo-Pacific range. Triggerfish are named for the complicated structure of part of the dorsal fin, which “locks into place” so the fish can secure itself in crevices.