Teleostei (teleosts) >
Acanthuriformes (Surgeonfishes) >
Chaetodontidae (Butterflyfishes)
Etymology: australis: Named for its southern hemisphere distribution; Latin australis for southern.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; pelagic-neritic; depth range 97 - 173 m (Ref. 76759). Tropical
Indo-West Pacific: off the northwest coast of Australia.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 11.9 cm SL male/unsexed; (Ref. 76759)
Dorsal spines (total): 11; Dorsal soft rays (total): 19 - 23; Anal spines: 3; Anal soft rays: 17. This species has the following characters: D XI,20; A III,17; pectoral-fin rays 14; 43 tubed lateral-line scales; body depth 73.2% in SL; light brown in color with body uniformly pale, the head somewhat darker, a dark elongated spot between 2nd and 7th soft dorsal fin rays, bordered anteriorly by a pale area of similar width, and extending onto membrane between last spine and first ray (Ref. 76759).
Body shape (shape guide): short and / or deep.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Kuiter, R.H., 2004. Description of a new species of butterflyfish, Roa australis, from northwestern Australia (Pisces: Perciformes: Chaetodontidae). Rec. Aust. Mus. 56:167-171. (Ref. 76759)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
Human uses
Fisheries: bycatch
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