Actinopteri (ray-finned fishes) > Acanthuriformes
(Surgeonfishes) > Acanthuridae
(Surgeonfishes, tangs, unicornfishes) > Acanthurinae
Etymology: Ctenochaetus: Greek, kteis, ktenos = comb + Greek, chaite = hair (Ref. 45335). More on author: Bennett.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range 1 - 113 m (Ref. 42056). Tropical; 21°C - 27°C (Ref. 27115); 23°N - 16°N, 170°W - 154°W
Eastern Central Pacific: endemic to the Hawaiian Islands and Johnston Island.
Length at first maturity / Size / Weight / Age
Maturity: Lm 14.5  range ? - ? cm
Max length : 15.0 cm SL male/unsexed; (Ref. 94645)
soft rays: 22 - 25. Yellow on edge of orbit broad and conspicuous (pale in preservative), especially posteriorly. Small spots on head blue, not extending onto anterior body or chest. Posterior gill rakers 30-36 (Ref 42056).
Benthopelagic over coral, rock, and rubble (Ref. 58302). Solitary. Mainly diurnal (Ref. 4887). Feeds on detritus by whisking its comb-like teeth over the bottom as it closes its mouth (Ref. 3921).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Spawn in pairs (Ref. 240).
Randall, J.E and K.D. Clements, 2001. Second revision of the surgeonfish genus Ctenochaetus (Perciformes: Acanthuridae), with descriptions of two new species. Indo-Pac. Fish. (32):33 p. (Ref. 42056)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Reports of ciguatera poisoning (Ref. 30298)
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 24.4 - 28.9, mean 27.4 °C (based on 382 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02291 (0.01376 - 0.03815), b=3.03 (2.89 - 3.17), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (K=0.9).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (29 of 100) .
Nutrients (Ref. 124155
): Calcium = 37.8 [22.7, 66.6] mg/100g ; Iron = 0.222 [0.104, 0.561] mg/100g ; Protein = 18.3 [17.1, 19.4] % ; Omega3 = 0.137 [0.085, 0.219] g/100g ; Selenium = 16.8 [9.4, 31.6] μg/100g ; VitaminA = 51.8 [13.1, 198.4] μg/100g ; Zinc = 0.502 [0.324, 1.520] mg/100g (wet weight);