Heniochus chrysostomus

Heniochus chrysostomus, also known as the threeband pennantfish, threeband bannerfish or pennant bannerfish, is a fish of the family Chaetodontidae.[1]

Heniochus chrysostomus
Heniochus chrysostomus from Borneo

Least Concern  (IUCN 3.1)
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Chaetodontidae
Genus: Heniochus
Species:
H. chrysostomus
Binomial name
Heniochus chrysostomus
G. Cuvier, 1831
Synonyms
  • Chaetodon teatae Curtiss, 1938
  • Heniochus chrysostomas Cuvier, 1831
  • Heniochus drepanoides Thiollière, 1857
  • Heniochus melanistion Bleeker, 1854
  • Heniochus permutatus

Distribution

The threeband pennantfish is widespread throughout the tropical and subtropical waters of the central Indo-Pacific from the western coast of India to Polynesia and from south Japan to New-Caledonia.[2][3]

Habitat

The threeband pennantfish typically inhabits coral-rich areas of reef flats, lagoon and seaward reefs at a depth of 2–40 metres (6 ft 7 in–131 ft 3 in).[4] Juveniles are usually found in lagoons and estuaries.[5]

Description
Heniochus chrysostomus from French Polynesia

The threeband pennantfish is a small-sized fish that can reach a maximum length of 18 cm.[3][4] The body is laterally strongly flattened, with a basic white color and three broad oblique brown bands. The first dark brown band runs from the forehead up to the ventral fins, the second from the dorsal fin to the anal fin, the third is adjacent to the dorsal fin. The first rays of the dorsal fin is elongated and looks like a black and white feather.

Head shows a short snout and a small protractile mouth. This bannerfish has a distinctive yellow coloration pattern on the mouth, top of the snout and running between its eyes. The posterior part of its dorsal fin, its caudal fin and the pectoral fins are orange-yellow. Juveniles have an ocellus which is a black spot rimmed with orange-yellow, on the bottom of its anal fin.

Biology

The threeband bannerfish form pairs during breeding.[3] They mainly feed on coral polyps.[3][6][7] Juveniles are solitary.

Conservation status

Out of some fishing activities to collect some specimen for aquarium, there do not appear to be any current threats to this species. However, it is listed as Least Concern (LC) by the IUCN.[2]

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References
  1. Biolib
  2. Myers, R. & Pratchett, M. 2010. Heniochus chrysostomus. The IUCN Red List of Threatened Species 2010: e.T165640A6077819. . Downloaded on 09 September 2015.
  3. Fishbase
  4. Lieske & Myers,Coral reef fishes,Princeton University Press, 2009, ISBN 9780691089959
  5. Dianne J. Bray, 2011, Pennant Bannerfish, Heniochus chrysostomus, in Fishes of Australia, accessed 26 Sep 2014, http://www.fishesofaustralia.net.au/home/species/2411
  6. Breder, C.M. and D.E. Rosen, 1966. Modes of reproduction in fishes. T.F.H. Publications, Neptune City, New Jersey. 941 p.
  7. Kuiter, R.H. and T. Tonozuka, 2001. Pictorial guide to Indonesian reef fishes. Part 2. Fusiliers - Dragonets, Caesionidae - Callionymidae. Zoonetics, Australia. 304-622 p.


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