Citron butterflyfish
  • Chaetodon citrinellus
  • English Name : Citron butterflyfish
  • Local Name : Rulhigadha bibee
  • Size : Max. 12 cm
  • Family : CHAETODONTIDAE
  • Order : Perciformes
  • Distinctive Characters: Dorsal fin with 14 spines and 20-22 rays. Anal fin with 3 spines and 16 or 17 rays. Pectoral fin with 13 or 14 rays. Body depth 1.7-1.9 in standard length.
  • Colour: Pale yellow with small spots of variable colour on each scale and a black border on anal fin. A prominent black band through the eyes.
  • Habitat and Biology: Common in shallow exposed reef flats and seaward reefs where coral growth is sparse. Usually seen in pairs. Feeds on coral polyps, benthic invertebrates and algae.
  • Distribution: Indo-Pacific.
  • Remarks: Chaetodon citrinellus is an aggressive species which frequently erects the dorsal spines and faces downwards in a defence position when approached by other fishes or divers.