Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Chaetodontidae
Etymology: australis: Named for its southern hemisphere distribution; Latin australis for southern.
Environment: milieu / climate zone / depth range / distribution range
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)
Morphology | Morphometrics
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).
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. 120744)
CITES (Ref. 118484)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 18.7 - 27.3, mean 22.9 (based on 72 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02188 (0.01072 - 0.04464), b=3.01 (2.84 - 3.18), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.3 ±0.6 se; Based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (12 of 100) .