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Teleostei (teleosts) > Acanthuriformes (Surgeonfishes) > Acanthuridae (Surgeonfishes, tangs, unicornfishes) > Nasinae
Etymology: Naso: Latin, nasus = nose (Ref. 45335).
More on authors: Quoy & Gaimard.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; reef-associated; depth range 1 - 60 m (Ref. 27115), usually 25 - 60 m (Ref. 27115). Tropical; 24°C - 28°C (Ref. 27115); 35°N - 31°S, 30°E - 128°W

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Indo-Pacific: East Africa, including the Mascarene Islands (Ref. 37792) to the Hawaiian, Marquesan, and Tuamoto islands, north to southern Japan, south to Lord Howe Island.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 100.0 cm TL male/unsexed; (Ref. 2334)

Short description Morphology | Morphometrics

Dorsal spines (total): 5; Dorsal soft rays (total): 28-29; Anal spines: 2; Anal soft rays: 27 - 28. Plain brown or olivaceous in color, paler below; subadults with black caudal rays, narrow margins and white caudal filaments; pectoral fins with white distal margins (Ref. 3145).

Juveniles occur in clear, shallow lagoon reefs at depths as little as 1 m; adults rarely seen in less than 25 m, encountered off outer reef drop-offs in small schools (Ref. 30573, 48637). Benthopelagic (Ref. 58302). Feeds on large zooplankton during the day and shelter within the reef during the night; also benthic algae (Ref. 30573, 48637).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Spawn in pairs (Ref. 240).

Main reference Upload your references | References | Coordinator : Randall, John E. | Collaborators

Myers, R.F., 1991. Micronesian reef fishes. Second Ed. Coral Graphics, Barrigada, Guam. 298 p. (Ref. 1602)

IUCN Red List Status (Ref. 126983)

Least Concern (LC) ; Date assessed: 04 May 2010

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Reports of ciguatera poisoning (Ref. 30298)

Human uses

Aquarium: commercial

FAO - Publication: search | FishSource | Sea Around Us

More information

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Internet sources

Estimates based on models

Preferred temperature (Ref. 123201): 23.5 - 28.3, mean 27.1 °C (based on 335 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.02399 (0.01396 - 0.04123), b=2.94 (2.79 - 3.09), in cm total length, based on LWR estimates for species & Genus-BS (Ref. 93245).

Trophic level (Ref. 69278): 2.1 ±0.09 se; based on food items.

Generation time: 5.2 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.

Resilience (Ref. 120179): Low, minimum population doubling time 4.5 - 14 years (K=0.213; Tmax=23).

Fishing Vulnerability (Ref. 59153): Moderate to high vulnerability (45 of 100).

Nutrients (Ref. 124155): Calcium = 25.8 [14.9, 48.4] mg/100g ; Iron = 0.496 [0.250, 0.868] mg/100g ; Protein = 18.8 [17.6, 19.9] % ; Omega3 = 0.111 [0.068, 0.214] g/100g ; Selenium = 45.7 [24.5, 84.5] μg/100g ; VitaminA = 34.8 [10.7, 111.9] μg/100g ; Zinc = 1.21 [0.83, 1.76] mg/100g (wet weight);

Naso annulatus (Quoy & Gaimard, 1825)