- EnglishName: Black-backed butterflyfish
- Local Name : Kalhali bibee
- Size : Max. 15 cm
- Family: CHAETODONTIDAE
- Order : Perciformes
- Distinctive Characters: Dorsal fin with 12 spines and 18-21 rays. Anal fin with 3 spines and 16-18 rays. Pectoral fin with 14-15 rays. Body depth 1.6-1.8 in standard length.
- Colour: Overall white with bright yellow fins. Numerous yellow oblique black lines on sides. Upper back blackish. A black blotch above anal spines. A yellow edged, black bar through eyes.
- Habitat and Biology: Usually seen in rich coral areas to 20 m depth. It may be seen singly, in pairs or in small groups. Feeds mainly on coral polyps.
- Distribution: Indo-Pacific.
- Remarks: The exquisitely patterned Chaetodon melannotus is a common species in the Maldives. This
species, although feeds on coral polyp, is suited for aquarium life and can be maintained.