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Naso hexacanthus  (Bleeker, 1855)

Sleek unicornfish
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Image of Naso hexacanthus (Sleek unicornfish)
Naso hexacanthus
Picture by Randall, J.E.


Philippines country information

Common names: Bagis, Bakwak, Danggit
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: commercial | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Known from Sibuyan, Romblon (Ref. 58652), Lanuza Bay (Ref. 104756), Malalag Bay and Sarangani Bay (Ref. 106380). Recorded from (San Luis, Bauan, Mabini, Lobo, San Juan) Batangas, between 3-7 m deep from Feb. - April 2014 (Ref. 107629). Also from Nalayag MPA and Sampalokan Verde Island (Ref. 107855). Also Ref. 37792, 53416.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/rp.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Rau, N. and A. Rau, 1980
National Database:

Classification / Names

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Acanthuridae (Surgeonfishes, tangs, unicornfishes) > Nasinae
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL

Main reference

Size / Weight / Age

Max length : 75.0 cm FL male/unsexed; (Ref. 1602); common length : 50.0 cm TL male/unsexed; (Ref. 30573)

Length at first maturity
Lm 45.0  range ? - ? cm

Environment

Marine; brackish; reef-associated; depth range 6 - 150 m (Ref. 30573), usually 10 - 137 m (Ref. 27115)

Climate / Range

Tropical; 25°C - 28°C (Ref. 27115); 31°N - 32°S, 30°E - 122°W (Ref. 57251)

Distribution

Indo-Pacific: Red Sea and East Africa (Ref. 9710), including the Mascarene Islands (Ref. 37792) to the Hawaiian, Marquesas and Ducie islands, north to southern Japan, south to Lord Howe Island.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 6; Dorsal soft rays (total): 27-29; Anal spines: 2; Anal soft rays: 27 - 30. Almost fusiform, body grayish to greenish brown, paler below. Two weak immovable bucklers on each side of caudal peduncle. Without horn; short groove in front of eye. Yellowish brown preopercular margin. Over 25 cm with black tongue. Skin granulated or velvety. Teeth small and slender, close-set and pointed. Caudal fin emarginate in young.

Biology     Glossary (e.g. epibenthic)

Inhabits clear lagoon and seaward reef slopes (Ref. 9710, 48637). Benthopelagic (Ref. 58302). Usually seen in large schools (Ref. 90102). Mainly diurnal, it feeds on zooplankton such as crab larvae, arrow worms, pelagic tunicates, and occasionally filamentous red algae. The species is never poisonous (Ref. 4795).

IUCN Red List Status (Ref. 115185)

Threat to humans

  Harmless (Ref. 4887)



Human uses

Fisheries: commercial; gamefish: yes; aquarium: commercial

More information

Common names
Synonyms
Metabolism
Predators
Ecotoxicology
Reproduction
Maturity
Spawning
Fecundity
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Length-frequencies
Morphometrics
Morphology
Larvae
Larval dynamics
Recruitment
Abundance
References
Aquaculture
Aquaculture profile
Strains
Genetics
Allele frequencies
Heritability
Diseases
Processing
Mass conversion
Collaborators
Pictures
Stamps, Coins Misc.
Sounds
Ciguatera
Speed
Swim. type
Gill area
Otoliths
Brains
Vision

Tools

Special reports

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Internet sources

BHL | Check for other websites | Check FishWatcher | CISTI | DiscoverLife | ECOTOX | FAO(Publication : search) | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | iSpecies | National databases | PubMed | Scirus | Sea Around Us | SeaLifeBase | Tree of Life | uBio | uBio RSS | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoological Record | Fishtrace

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Trophic Level (Ref. 69278)
3.1   ±0.33 se; Based on food items.

Resilience (Ref. 69278)
Low, minimum population doubling time 4.5 - 14 years (tm=7; K=0.221; Tmax=44;)

Vulnerability (Ref. 59153)
Moderate vulnerability (41 of 100)
Price category (Ref. 80766)
Medium