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Naso caesius Randall & Bell, 1992

Gray unicornfish
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Naso caesius   AquaMaps   Data sources: GBIF OBIS
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Image of Naso caesius (Gray unicornfish)
Naso caesius
Picture by Randall, J.E.


Papua New Guinea country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments:
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/pp.html
National Fisheries Authority: http://www.spc.org.nc/coastfish/Countries/PNG/png.htm
Occurrences: Occurrences Point map
Main Ref: Allen, G.R. and M.V. Erdmann, 2012
National Database:

Common names from other countries

Classification / Names Populärnamn | synonymer | Catalog of Fishes(Släkte, Arter) | ITIS | CoL | WoRMS | Cloffa

> Acanthuriformes (Surgeonfishes) > Acanthuridae (Surgeonfishes, tangs, unicornfishes) > Nasinae
Etymology: Naso: Latin, nasus = nose (Ref. 45335);  caesius: Naso caesius is in reference to its most common ground color which is bluish grey..
  More on authors: Randall & Bell.

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

marina revassocierade; djupintervall 15 - 50 m (Ref. 90102).   Tropical

Utbredning Länder | FAO områden | Ekosystem | Förekomster | Point map | Utplanteringar | Faunafri

Pacific Ocean: Northern Marianas, Marshall Islands, Hawaiian Islands, Pitcairn group, Society Islands (French Polynesia), Australia and New Caledonia.

Size / Vikt / Age

Maturity: Lm ?  range ? - ? cm
Max length : 45.6 cm SL hane/ej könsbestämd; (Ref. 9944)

Short description Bestämningsnycklar | Morfologi | Morfometri

Taggstrålar i ryggfenan (totalt) : 6 - 7; Mjukstrålar i ryggfenan (totalt) : 27 - 30; Taggstrålar i analfenan: 2; Mjukstrålar i analfenan: 28 - 31. Bluish grey to grey-brown, capable of displaying a colour pattern of vertically elongate blotches (lighter or darker than ground colour) on side and upper part of body. Opercular and preopercular margins not dark brown. Caudal fin uniform in colour. Gill rakers on lower limb of gill arches entirely pale. Edge of lower lip not white (Ref 9808).

Biologi     Ordlista (t.ex. epibenthic)

Benthopelagic over coral and rock (Ref. 58302). Occurs singly or in aggregations along clear seaward and outer lagoon reefs and channels (Ref. 37816). Feeds in midwater on zooplankton (Ref. 90102).

Life cycle and mating behavior Maturities | Reproduktion | Spawnings | Egg(s) | Fecundities | Larver

Main reference Upload your references | referenser | Koordinator : Randall, John E. | Medarbetare

Randall, J.E. and L.J. Bell, 1992. Naso caesius, a new acanthurid fish from the Central Pacific. Pac. Sci. 46(3):344-352. (Ref. 9944)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 06 May 2010

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

Fiskeri: kommersiell
FAO(Publication : search) | FishSource | Sea Around Us

Ytterligare information

Trophic ecology
Födoslag
Diet compositions
Food consumptions
Food rations
Predatorer
Ecology
Ekologi
Home ranges
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances
Life cycle
Reproduktion
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
Larver
Larvdynamik
Distribution
Länder
FAO områden
Ekosystem
Förekomster
Utplanteringar
BRUVS - Videos
Anatomy
Gill areas
Hjärnstorlek
Otoliths
Physiology
Body compositions
Nutrients
Oxygen consumptions
Swimming type
Swimming speeds
Visual pigment(s)
Fiskljud
Diseases / Parasites
Toxicities (LC50s)
Genetics
Genetik
Electrophoreses
Heritabilities
Human related
Aquaculture systems
Vattenbruksprofiler
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Ciguatera cases
Stamps, coins, misc.
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References
referenser

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Estimates based on models

Preferred temperature (Ref. 115969): 24.7 - 28.8, mean 26.5 (based on 82 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 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).
Trofisk nivå (Ref. 69278):  2.3   ±0.1 se; based on size and trophs of closest relatives
Resiliens (Ref. 120179):  Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Moderate vulnerability (42 of 100).
Price category (Ref. 80766):   Medium.