Chaetodon blackburnii, also known as Rayed butterflyfish and Brownburnie; Juveniles have dark brown bodies with bright yellow on and behind the operculum. Adults are somewhat lighter in colour and the opercular region is often brownish-yellow. There is a dark eye bar present and the caudal fin is white with a translucent margin. Six or more diagonal bars adorn the sides of the body, but these are not so readily apparent in juveniles. The dorsal and anal fins are brownish-black and the pelvic fins are bright yellow. This species grows to 13 cm (5.5 in.) in length. In the wild it eats coral polyps and clams.
Chaetodon blackburnii is to be found in Coral reefs on outer reef slopes with moderate coral growth in the Western Indian Ocean from Kenya to Bashee River/South Africa (Eastern Cape Province), Madagascar and Mauritius. The Rayed butterflyfish is not often imported into Europe, but in the United States this species has grown in popularity because of its hardiness. Although it is not the most colourful of all the butterflyfishes, it makes up for this by its eagerness to feed on most foods that are offered.
Butterflyfish are not recommended for reefs as they will pick at or eat a wide variety of corals, fan worms, and other invertebrates. Most Butterflyfish are known to pick at Aiptaisia, a parasitic anemone.
Chaetodon blackburni Desjardins, 1836
Chaetodon blockburnii Desjardins, 1836
Tetragonoptrus blackburni (Desjardins, 1836)
Classification: Biota > Animalia (Kingdom) > Chordata (Phylum) > Vertebrata (Subphylum) > Gnathostomata (Superclass) > Pisces (Superclass) > Actinopterygii (Class) > Perciformes (Order) > Chaetodontidae (Family) > Chaetodon (Genus) > Chaetodon blackburnii (Species)