The Flagfinned Angelfish (Apolemichthys trimaculatus) is a magnificent inhabitant of the tropical Indo-Pacific, ranging from the reefs of East Africa to the distant islands of the western Pacific and the southern shores of Japan. Its appearance is one of regal simplicity, as though draped in a flowing robe of golden silk. Along the anal fin, this brilliant yellow gives way to a striking band of ivory white and jet black, forming the distinctive banner from which its common name is derived. The noble attire is accented by a pair of royal blue lips and crowned with a sword-like black marking upon the forehead.
The latter marking is also one of three dark spots that lend the species its other common name, the Threespot Angelfish. Two additional, more subtle markings lie behind the gill covers, completing this distinctive arrangement. Interestingly, juveniles wear an entirely different pattern. Their golden bodies are decorated with delicate vertical bars, a dark stripe conceals the eyes, and a false eyespot adorns the rear of the dorsal fin. As they mature, these markings gradually disappear, revealing the simpler but more commanding coloration of adulthood.
In the wild, Flagfinned Angelfish frequent coral-rich reef slopes and drop-offs, where they forage among the intricate communities of sponges, tunicates, and other encrusting organisms. Unlike the more territorial personalities of many large angelfish, Flagfins are often encountered alone or in pairs and occasionally in loose groups. Their confident yet relatively peaceful disposition makes them particularly appealing among the larger members of the angelfish family.
Despite their stately appearance, Flagfinned Angelfish have a somewhat challenging history in captivity, primarily owing to their specialized feeding habits. Newly imported specimens can be reluctant to accept conventional aquarium foods, making well-acclimated individuals especially desirable. Our specimens have adapted exceptionally well, readily accepting frozen foods and feeding enthusiastically at our facility.
The Flagfinned Angelfish is reef safe with caution, as its natural inclination to graze on sessile invertebrates may extend to ornamental corals and clams.
