- EnglishName: Chevron butterflyfish
- Local Name : Haluvi bibee
- Size : Max. 17 cm
- Family: CHAETODONTIDAE
- Order : Perciformes
- Distinctive Characters: Dorsal fin with 12-14 spines and 14-16 rays. Anal fin with 4-5 spines and 13-15 rays. Pectoral fin with 15 rays. Body depth 1.7-2.2 in standard length. Body elongate. The dorsal and anal fins angular.
- Colour: Overall white with narrow chevron markings on sides. Basal two-thirds of caudal fin blackish in adults; yellow in juveniles. A black bar through eyes.
- Habitat and Biology: Usually found on reef edges and upper slopes at depths of 2-20 m. Aggressively defends a small territory of table coral on which it feeds.
- Distribution: Indo-Pacfic.
- Remarks: Chaetodon trifascialis is an obligate coralivore, and also is not recommended as an aquarium fish