Redspot Cardinalfish, Ostorhinchus dispar (Fraser & Randall 1976)

A Redspot Cardinalfish, Ostorhinchus dispar, at Marovo Island, Solomon Islands, November 2014. Source: Mark Rosenstein / License: CC BY Attribution-Noncommercial-ShareAlike

A semi-transparent pinkish cardinalfish with a narrow reddish midlateral stripe from the tip of the snout ending in a large red spot on the caudal peduncle, prominent small white spots immediately above the caudal peduncle spot, two red spots behind and above the eye, and broad red tips on the caudal-fin lobes. 
Recorded from the Australian territory of Cocos (Keeling) Islands in the Indian Ocean.

Cite this page as:
Bray, D.J. 2017, Ostorhinchus dispar in Fishes of Australia, accessed 02 Apr 2020,

Redspot Cardinalfish, Ostorhinchus dispar (Fraser & Randall 1976)

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Recorded in the Australian EEZ from the territory of Cocos (Keeling) Islands in the Indian Ocean. Occurs elsewhere in the east-Indo-west Pacific - Cocos-Keeling Islands to Fiji and Palau, north to Yaeyama Islands, south to Indonesia.
Inhabits steep outer reef slopes - usually aggregating in caves on drop-offs, or amongst black corals and dense gorgonian corals growing from drop-off walls.


Dorsal fin VII + I, 9; Anal fin II, 8; Pectoral fin 13-14; Lateral line scales 25; Gill rakers 21-25 (4-5 + 17-20); Predorsal scales 4–5.
Body depth 3.1-3.6 in SL.


Apogon dispar Fraser & Randall 1976, Proc. Biol. Soc. Washington 88(47): 5504, fig. 1. Type locality: cave at base of southwestern end of Augulpelu Reef, Palau Island, Caroline Islands. 

Species Citation

Allen, G.R. 1993. Cardinalfishes (Apogonidae) of Madang Province, Papua New Guinea, with descriptions of three new species. Rev. Fr. Aquariol. 20(1): 9-20.

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

Allen, G.R. & Smith-Vaniz, W.F. 1994. Fishes of Cocos (Keeling) Islands. Atoll Research Bulletin 412: 1-21.

Fraser, T.H. 2012. A new species of deeper dwelling West Pacific cardinalfish (Percomorpha: Apogonidae) with a redescription of Ostorhinchus atrogaster. Zootaxa 3492: 77-84.

Fraser, T.H. & Randall, J.E. 1976. Two new Indo-West Pacific cardinalfishes of the genus Apogon. Proceedings of the Biological Society of Washington 88(47): 503-508.

Kuiter, R.H. 1992. Tropical Reef-Fishes of the Western Pacific, Indonesia and Adjacent Waters. Jakarta : PT Gramedia Pustaka Utama 314 pp. pls.

Kuiter, R.H. & Tonozuka, T. 2001. Indonesian Reef Fishes. Part 1. Eels- Snappers, Muraenidae - Lutjanidae. Australia : Zoonetics pp. 1-302.

Mabuchi, K., Fraser, T.H., Song, H., Azuma, Y. & Nishida, M. 2014. Revision of the systematics of the cardinalfishes (Percomorpha: Apogonidae) based on molecular analyses and comparative reevaluation of morphological characters. Zootaxa 3846(2): 151–203


Bray, D.J. 2017

Redspot Cardinalfish, Ostorhinchus dispar (Fraser & Randall 1976)


Australian Faunal Directory

Quick Facts

CAAB Code:37327181

Biology:Mouth brooder (males)

Depth:15-50 m

Habitat:Reef associated

Max Size:5 cm TL

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