Island Gregory, Stegastes insularis Allen & Emery 1985


Island Gregory, Stegastes insularis, from Taiwan. Source: Fish Database of Taiwan / http://fishdb.sinica.edu.tw. License: CC BY Attribution-Noncommercial

Summary:
A pale bluish-grey to dark grey damselfish with dusky-grey scale margins forming narrow vertical bands, rear of body, rear of dorsal fin, tail base and caudal fin are bright yellow, pectoral fin slightly yellow; anterior part of dorsal fin with a dark patch and a narrow blue margin; a small black spot present of upper part of pectoral-fin base; head with bluish to lavendar markings below the eye.

Cite this page as:
Dianne J. Bray, Stegastes insularis in Fishes of Australia, accessed 03 Dec 2020, http://136.154.202.208/Home/species/4906

Island Gregory, Stegastes insularis Allen & Emery 1985

More Info


Distribution

Found at the Australian territories of Christmas Island and Cocos (Keeling) Islands in the Indian Ocean; also in Taiwan, the Amami Islands, southern Japan, and Marcus Island in the northwest Pacific. Inhabits shallow rocky and coral reefs usually in depths to 5 m.

Biology

Males and females form pairs during the breeding season, and the males guard the developing eggs.

Species Citation

Stegastes insularis Allen & Emery, 1985, Indo-Pacific Fishes 3: 19. Type locality: off Ethel Beach, Christmas Island, eastern Indian Ocean. 

Author

Dianne J. Bray

Island Gregory, Stegastes insularis Allen & Emery 1985

References


Allen, G. R. 2001. Family Pomacentridae. pp. in Carpenter, K.E. & Niem, T.H. (eds). The Living Marine Resources of the Western Central Pacific. FAO Species Identification Guide for Fisheries Purposes. Rome : FAO Vol. 6 pp. 3381-4218. 

Allen, G.R. & A.R. Emery. 1985. A review of the Pomacentrid fishes of the genus Stegastes from the Indo-Pacific, with descriptions of two new species. Indo-Pacific Fishes 3: 31 pp.

Allen, G.R. & Erdmann, M.V. 2012.Reef fishes of the East Indies. Perth : Tropical Reef Research 3 vols, 1260 pp.

Allen, G.R., Steene, R.C. & Orchard, M. 2007. Fishes of Christmas Island. Christmas Island : Christmas Island Natural History Association 2 edn, 284 pp.

Hobbs, J-P.A., S .J. Newman, G.E.A. Mitsopoulos, M.J. Travers, C.L. Skepper, J.J. Gilligan, G.R. Allen, H.J. Choat & A.M. Ayling. 2014. Checklist and new records of Christmas Island fishes: the influence of isolation, biogeography and habitat availability on species abundance and community composition. Raffles Bulletin of Zoology Supplement 30: 184–202.

Hobbs, J-P.A., S .J. Newman, G.E.A. Mitsopoulos, M.J. Travers, C.L. Skepper, J.J. Gilligan, G.R. Allen, H.J. Choat & A.M. Ayling. 2014. Fishes of the Cocos (Keeling) Islands: new records, community composition and biogeographic significance. Raffles Bulletin of Zoology Supplement 30: 203–219.

Nishiyama, H., Watai, M., Senou, H. & Motomura, H. 2012. Records of Stegastes insularis (Perciformes, Pomacentridae) from Yoron-jima Island, the Amami Islands, Kagoshima Prefecture, Japan, and notes on distributional implications for the species. Japan. Japanese Journal of Ichthyology 59(2): 155-162 (in Japanese). PDF Open access

Quick Facts


CAAB Code:37372150

Behaviour:Males guard developing eggs

Depth:1-10 m

Habitat:Reef associated

Max Size:11 cm TL

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