Comprehensive DescriptionRead full entry
| Common names: butterflyfish (English), mariposa (Espanol) |
Chaetodon unimaculatus Bloch, 1787
Body a strongly compressed oval disc; mouth small, at end of a short, blunt snout; teeth long and slender; dorsal fin with XIII, 21-23; anal fin III, 18-20, 2nd spine longer than 3rd; rear edges of dorsal and anal fins bluntly angular; tail edge straight to rounded; lateral line in a high arch, incomplete (ends under dorsal fin); scales rough, covering dorsal and anal fins as well as head and body; 38-47 lateral line scales.
Body white, with a broad black bar through eye and a thin black bar across tail base extending onto rear of dorsal and anal fins; a large black spot on back; yellow dorsal, anal and pelvic fins; tail fin clear.
Size: 20 cm.
Habitat: rocky and coral reefs.
Depth: 1-20 m.
An Indo-Pacific species; present as a vagrant in the Galapagos.