Tripleband Butterflyfish, Roa australis Kuiter 2004


Other Names: Triple-banded Butterflyfish

Tripleband Butterflyfish, Roa australis. Source: Australian National Fish Collection, CSIRO. License: CC BY Attribution-Noncommercial

Summary:
A whitish butterflyfish with three yellowish-brown to reddish-brown bands, the first through the eye, second extending onto the spinous dorsal and pelvic fins, and the thirdt extending onto the soft dorsal and anal fins,  and one on the caudal peduncle and caudal fin base, a slightly darker head, and a dark elongate ocellated spot on the soft dorsal fin partly encircled by a broad pale margin. The species occurs on mesophotic reefs off northern Australia.

Cite this page as:
Bray, D.J. 2017, Roa australis in Fishes of Australia, accessed 21 Nov 2018, http://fishesofaustralia.net.au/home/species/1299

Tripleband Butterflyfish, Roa australis Kuiter 2004

More Info


Distribution

Endemic to tropical waters of northern Australia, from just south of Rowley Shoals, northwest of Port Hedland, Western Australia, to the Arafura Sea, northeast of Darwin, Northern Territory. Depth range 97-205 m.

Features

Dorsal fin XI, 19-25; Anal fin III, 16-18; Pectoral fin 13-16; Lateral line scales (tubed) 37-46.

Body depth 63-73% in SL.

Size

To a standard length of 11.4 cm.

Colour

Body whitish overall with three vertical brown to reddish-brown bands - the first from the origin of the dorsal fin through the eye and over the lower cheek; second extending from below the 4th and 5th dorsal-fin spines to the mid-abdomen; third band extending from below the posterior 3rd to 4th dorsal-fin spine to the caudal peduncle, and narrowing onto the first soft-anal-fin ray.

Fin spines white; membranes of the first and second dorsal-fin spines black; soft dorsal fin with an elongate black spot with a broad white anterior border between 2nd and 7–8th rays extending somewhat below the black pigment; soft dorsal and anal fins with a submarginal white band; caudal fin mostly clear, pale reddish-brown at base; pelvic-fin rays brown to a dusky reddish-brown with a black margin and fin tip.

Fisheries

Although of no interest to fisheries, the species may be taken as bycatch in commercial trawls.

Conservation

IUCN Red List: Least Concern

Etymology

The name australis is from Latin, meaning southern, in reference to the southern Hemisphere distribution of this species.

Species Citation

Roa australis Kuiter 2004, Rec. Aust. Mus. 56: 168, fig. 1.Type locality: off Port Hedland, Western Australia, 18°24'S 119°02'E, 140 m.

Author

Bray, D.J. 2017

Resources

Australian Faunal Directory

Tripleband Butterflyfish, Roa australis Kuiter 2004

References


Allen, G.R. 1980. Butterfly and Angelfishes of the World. New York : John Wiley & Sons Vol. 2 pp. 149-352 figs 214-510 (p. 162, as Chaetodon modestus)

Gloerfelt-Tarp, T. & P.J. Kailola. 1984. Trawled Fishes of southern Indonesia and northwestern Australia. Australian Development Assistance Bureau; Directorate General of Fisheries, Indonesia; German Agency for Technical Cooperation, 406 pp. (as Chaetodon modestus)

Kuiter, R.H. 2004. Description of a new species of Butterflyfish, Roa australis, from northwestern Australia (Pisces: Perciformes: Chaetodontidae). Records of the Australian Museum 56: 167-171.  https://doi.org/10.3853/j.0067-1975.56.2004.1424 PDF available, open access

Pyle, R. & Myers, R. 2010. Roa australis. The IUCN Red List of Threatened Species 2010: e.T180103A7642592. http://dx.doi.org/10.2305/IUCN.UK.2010-4.RLTS.T180103A7642592.en. Downloaded on 19 October 2017.

Rocha, L.A., Pinheiro, H.T., Wandell, M, Rocha, C.R. & Shepherd, B. 2017. Roa rumsfeldi, a new butterflyfish (Teleostei: Chaetodontidae) from mesophotic coral ecosystems of the Philippines. ZooKeys 709: 127-134. https://doi.org/10.3897/zookeys.709.20404

Sainsbury, K.J., Kailola, P.J. & Leyland, G.G. 1985. Continental Shelf Fishes of Northern and North-Western Australia. Canberra : Fisheries Information Service 375 pp. figs & pls (p. 244, as Chaetodon modestus)


Tea, Y.-K. 2015. Reviewing Roa: An intimate look at this handsome genus. https://reefs.com/2015/10/23/reviewing-roa-an-intimate-look-at-this-handsome-genus/ Accessed: 20 October 2017

Quick Facts


CAAB Code:37365006

Conservation:IUCN Least Concern

Depth:97-205 m

Habitat:Reef associated

Max Size:12 cm SL

Native:Endemic

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Species Maps

CAAB distribution map