Actinopteri (ray-finned fishes) > Acanthuriformes
(Surgeonfishes) > Pomacanthidae
Etymology: Genicanthus: Greek, geny, -yos = face, jaw + Greek, akantha = thorn (Ref. 45335). More on author: Randall.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range 20 - 174 m (Ref. 58302). Tropical; 30°N - 17°N
Eastern Central Pacific: endemic to the Hawaiian Islands. Have recently been reported from Midway Islands (Ref. 28620).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 21.0 cm TL male/unsexed; (Ref. 4858)
Sexes exhibit different coloration. Male pearly white with anterior portion of the head, from the snout to just behind the eye, yellow orange; anterior half of the caudal fin black; dorsal and anal fins white with a broad orange band distally; the pectoral and pelvic fins orange. Female pearly white with anterior portion of the head, from the snout to just behind the eye black or gray; anterior half of the caudal fin also black; distal portion of pelvic fins orange.
Inhabits seaward reefs (Ref. 9710). Benthopelagic over rock and sand (Ref. 58302). Minimum depth from Ref. 122680.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Allen, G.R., 1985. Butterfly and angelfishes of the world. Vol. 2. 3rd edit. in English. Mergus Publishers, Melle, Germany. (Ref. 4858)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Fisheries: of no interest; aquarium: commercial
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 9.1 - 20.6, mean 14.1 °C (based on 19 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.03311 (0.01558 - 0.07036), b=2.88 (2.70 - 3.06), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 2.7 ±0.31 se; based on food items.
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (35 of 100) .
Nutrients (Ref. 124155
): Calcium = 54.7 [32.7, 85.9] mg/100g ; Iron = 0.604 [0.393, 0.962] mg/100g ; Protein = 18.6 [17.4, 19.7] % ; Omega3 = 0.125 [0.079, 0.189] g/100g ; Selenium = 25.9 [14.3, 47.8] μg/100g ; VitaminA = 73.2 [21.6, 237.7] μg/100g ; Zinc = 1.38 [0.92, 2.04] mg/100g (wet weight);