Western Pacific: Cocos-Keeling Islands in the eastern Indian Ocean and Indonesia to Fiji and Tonga (Ref. 53797), north to southern Japan, south to New Caledonia and New South Wales, Australia. Replaced by Chaetodon triangulum in the Indian Ocean (Ref. 37816).
Size / Weight / Age
Maturity: Lm? range ? - ? cm Max length : 16.0 cm TL male/unsexed; (Ref. 48636)
Occurs in lagoon and seaward reefs. Feeds exclusively on the polyps of the tubular Acropora corals. Swims in pairs and are territorial. Oviparous (Ref. 205). Form pairs during breeding (Ref. 205).
Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Distinct pairing (Ref. 205). Monogamous mating is observed as both obligate and social (Ref. 52884).
Randall, J.E., G.R. Allen and R.C. Steene, 1990. Fishes of the Great Barrier Reef and Coral Sea. University of Hawaii Press, Honolulu, Hawaii. 506 p. (Ref. 2334)
Preferred temperature (Ref. 115969): 25.2 - 29.3, mean 28.6 °C (based on 2473 cells).
Phylogenetic diversity index (Ref. 82805): PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02344 (0.01252 - 0.04390), b=3.00 (2.84 - 3.16), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Trophic level (Ref. 69278): 3.3 ±0.61 se; based on food items.
Generation time: 1.1 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Resilience (Ref. 120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153): Low vulnerability (14 of 100) .
