Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Acanthuridae
(Surgeonfishes, tangs, unicornfishes) > Nasinae
Etymology: Naso: Latin, nasus = nose (Ref. 45335). More on author: Herre.
Environment / Climate / Range
Marine; reef-associated; depth range 20 - 50 m (Ref. 90102). Tropical; 30°N - 12°S
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 60.0 cm SL male/unsexed; (Ref. 48637)
soft rays: 26 - 30. Lacks a horn, has numerous black close-set spots on the upper half of its body and tail, and is white ventrally. Body elongate, its depth 3.3 to 3.7 times in SL (Ref 9808).
Western Pacific: southern Honshu, Japan to the Great Barrier Reef and New Caledonia. Reported from the Similan Islands in the Andaman Sea and Guam. Recently recorded from Tonga (Ref. 53797).
Inhabits coastal to outer reef slopes subject to strong currents. Sometimes in large schools (Ref. 48637). Generally uncommon species found in steep outer reef drop-offs (Ref. 9710). Usually found in waters deeper than 6 m. Feeds on zooplanktons (Ref. 90102). Solitary or in groups (Ref. 37816).
Myers, R.F., 1991. Micronesian reef fishes. Second Ed. Coral Graphics, Barrigada, Guam. 298 p.
IUCN Red List Status (Ref. 90363)
Threat to humans
Fisheries: commercial; aquarium: commercial
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
CollaboratorsPicturesStamps, CoinsSoundsCiguateraSpeedSwim. typeGill areaOtolithsBrainsVision
Estimates of some properties based on empirical models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02450 (0.01112 - 0.05397), b=2.94 (2.76 - 3.12), based on LWR estimates for this Genus-BS (Ref. 93245
Trophic Level (Ref. 69278
): 3.3 ±0.4 se; Based on diet studies.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate to high vulnerability (53 of 100) .