Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range ? - 30 m (Ref. 86942). Tropical; 30°N - 30°S
Indian Ocean: from East Africa and islands of western and central Indian Ocean to Andaman Sea, Cocos-Keeling Islands, Christmas Island, and western Indonesia (western Sumatra, Java, Bali ad Nusa Penida).. According to Randall, pers. comm. 1995 Chaetodon trifasciatus occurs only in the Indian Ocean while Chaetodon lunulatus occurs only in the Pacific). DNA (from tissue samples) expected to further distinguished two distinct species (Chaetodon lunulatus and Chaetodon trifasciatus (Ref. 86689).
Length at first maturity / Size / Weight / Age
Maturity: Lm 13.8, range 13 - 15 cm
Max length : 15.0 cm TL male/unsexed; (Ref. 5372); common length : 12.0 cm TL male/unsexed; (Ref. 5450)
Occur in coral-rich lagoons and semi-protected seaward reefs. Territorial and aggressive to other Chaetodon. Small juveniles secretive in corals (Ref. 48636). Swim in pairs. Feed exclusively on coral polyps, particularly of the Pocillopora type (Ref. 5503, 48636). Oviparous (Ref. 205), monogamous (Ref. 52884). 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 obligate, geentic and social (Ref. 52884).
Myers, R.F., 1991. Micronesian reef fishes. Second Ed. Coral Graphics, Barrigada, Guam. 298 p. (Ref. 1602)
IUCN Red List Status (Ref. 126983)
Threat to humans
Fisheries: minor commercial; aquarium: commercial
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82804
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02344 (0.01589 - 0.03457), b=3.06 (2.94 - 3.18), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.3 ±0.6 se; based on diet studies.
Generation time: 0.8 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (K>1).
Fishing Vulnerability (Ref. 59153
): Low vulnerability (10 of 100).
Nutrients (Ref. 124155
): Calcium = 141 [69, 248] mg/100g ; Iron = 1.12 [0.63, 2.02] mg/100g ; Protein = 18.7 [17.5, 19.9] % ; Omega3 = 0.116 [0.061, 0.225] g/100g ; Selenium = 44.1 [20.8, 94.0] μg/100g ; VitaminA = 29.6 [7.5, 114.6] μg/100g ; Zinc = 1.73 [1.09, 2.68] mg/100g (wet weight);