Okinawa Chromis, Chromis cf okamurai Yamakawa & Randall 1989


Summary:
A bluish-white chromis with a broad brown stripe along the upper side from the eye to the rear of dorsal-fin base, a pale blue stripe above, a second indistinct brown stripe along the midside ending in a brown bar on the caudal peduncle, bright yellow on the nape and along the upper back and dorsal fin, a bright yellow caudal fin, and a large black spot at the top of the pectoral-fin base. The the anal fin is pale blue.

Cite this page as:
Bray, D.J. 2022, Chromis cf okamurai in Fishes of Australia, accessed 09 Aug 2022, https://fishesofaustralia.net.au/Home/species/5380

Okinawa Chromis, Chromis cf okamurai Yamakawa & Randall 1989

More Info


Distribution

Outer Great Barrier Reef, NE of Townsville, Queensland. Elsewhere the species occurs in the north-west Pacific.

Features

Dorsal fin XIV, 13; anal fin II, 12; pectoral fin 18-19; pelvic rays I, 5; total caudal rays 12+11, the first two of upper and lower lobes as short spinules; tubed lateral-line scales 17; pored lateral-line scales on caudal peduncle 7; scales above lateral line to origin of dorsal fin 4; scales below lateral line to origin of anal fin 9; circum-peduncular scales 14; gill rakers 8+19; vertebrae 11+15. Body depth 49.4% SL; orbit diameter 13.6% SL; length of second anal spine greater than 23.5% SL. 

Colour

Oblique black stripe from eye to dorsal fin terminus. Second white stripe below, from lower edge of orbit to distal edge of caudal peduncle. Third black stripe from pectoral fin base to middle of caudal peduncle.

Etymology

The species is named in honour of Dr. Osamu Okamura, Professor of Zoology of Kochi University.

Species Citation

Chromis okamurai Yamakawa & Randall 1989, Japanese Journal of Ichthyology 36(3): 299, Figs. 1-3. Type locality: Okinawa Trough, 25°53.4'N, 123°59.4'E, depth 135-175 m.

Author

Bray, D.J. 2022

Resources


Okinawa Chromis, Chromis cf okamurai Yamakawa & Randall 1989

References


Allen, G.R. 1991. Damselfishes of the World. Melle, Germany : Mergus Verlag 271 pp.

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

Nakabo, T. (ed.) 2002. Fishes of Japan with pictorial keys to the species. English edition. Tokyo : Toikai University Press Vol. 2 pp. 867-1749.

Shao, K.-T., Ho, H.-C., Lin, P.-L., Lee, P.-F.,  Lee, M.-Y., Tsai, C.-Y., Liao, Y.-C. & Lin, Y.-C. 2008. A checklist of the fishes of southern Taiwan, Northern South China Sea. Raffles Bulletin of Zoology Suppl. 19: 233-271. PDF available

Sih, T.L., Cappo, M. & Kingsford, M. 2017. Deep-reef fish assemblages of the Great Barrier Reef shelf-break (Australia). Scientific Reports 7: 10886  https://doi.org/10.1038/s41598-017-11452-1

Yi-Kai Tea, Y-K., Gill, A.C. & Senou, H. 2019. Chromis tingting, A New Species of Damselfish from Mesophotic Coral Ecosystems of southern Japan, with Notes on C. mirationis Tanaka (Teleostei: Pomacentridae). Zootaxa. 4586(2); 249–260. http://dx.doi.org/10.11646/zootaxa.4586.2.2

Yamakawa, T. & Randall, J.E. 1989. Chromis okamurai, a new damselfish from the Okinawa Trough, Japan. Japanese Journal of Ichthyology 36(3): 299-302. https://doi.org/10.1007/BF02905613 Abstract

Quick Facts


CAAB Code:37372154

Depth:143 m (AUS)

Habitat:Reef associated

Max Size:~10 cm

Species Maps

CAAB distribution map