Actinopteri (ray-finned fishes) > Acanthuriformes
(Surgeonfishes) > Acanthuridae
(Surgeonfishes, tangs, unicornfishes) > Nasinae
Etymology: Naso: Latin, nasus = nose (Ref. 45335). More on authors: Randall & Struhsaker.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range 43 - 220 m (Ref. 58302), usually - m (Ref. ). Tropical; 0°C - ; 29°N - 19°N, 119°E - 156°W (Ref. 57252)
Pacific Ocean: antitropical, from Japan and Lord Howe Island to the Hawaiian Islands.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 60.0 cm TL male/unsexed; (Ref. 9710)
(total): 6 - 7;
soft rays: 26 - 28. Body elongate, higher and more bluish than N. lopezi. Forehead without rostral prominence even in adults. Two small peduncular plates each with a sharp, approximately semicircular, laterally projecting keel. caudal fin emarginate without a filament. Reaches 46 cm SL.
Found in deep seaward reefs (Ref. 9710). Benthopelagic and mesopelagic (Ref. 58302).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Masuda, H., K. Amaoka, C. Araga, T. Uyeno and T. Yoshino, 1984. The fishes of the Japanese Archipelago. Vol. 1. Tokai University Press, Tokyo, Japan. 437 p. (text). (Ref. 559)
IUCN Red List Status (Ref. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 18.7 - 23.3, mean 19.9 °C (based on 19 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01995 (0.00906 - 0.04395), b=3.00 (2.82 - 3.18), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245
Trophic level (Ref. 69278
): 2.3 ±0.1 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate vulnerability (39 of 100) .
Nutrients (Ref. 124155
): Calcium = 31.6 [16.7, 56.7] mg/100g ; Iron = 0.599 [0.339, 1.001] mg/100g ; Protein = 18.9 [17.9, 20.0] % ; Omega3 = 0.113 [0.073, 0.193] g/100g ; Selenium = 41 [22, 81] μg/100g ; VitaminA = 26.4 [8.2, 85.5] μg/100g ; Zinc = 1.3 [0.8, 1.9] mg/100g (wet weight);