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Naso annulatus (Quoy &. Gaimard, 1825)
Ring-tailed Unicorn-fish; Ring-tailed Unicornfish; Ringtailed Unicornfish; Short-horned Unicorn-fish; White-margin Unicorn; Whitemargin Unicornfish; Priodon annulatus Quoy and Gaimard, 1825; White-margin unicornfish

Life   Vertebrata   Fish   Acanthuridae   Naso

Naso annulatus
© Copyright John Rangall, 2006 · 0
Naso annulatus

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  • cuerno muy largo
  • gris-azul
  • c: negra + membranas y bordes pálidas
  • base cola: 2 quillas

Pez-unicornio de margen blanco

Cuerpo alargado, oval; hocico puntiagudo, inclinado aproximadamente 60°; adultos con un largo cuerno que disminuye gradualmente antes del ojo y que se puede extender una longitud cefálica hacia delante (una protuberancia sobre la parte frontal en juveniles); dientes pequeños, cónicos, con puntos ligeramente deprimidos, lisos o con ligeras denticulaciones; 2 pares de quillas cortantes sobre placas en la parte angosta de la base de la cola; pélvicas I, 3; margen caudal recto, una serie de ondas sobre el margen posterior, filamentos largos desde la parte de arriba hacia abajo en machos (recto en juveniles); dorsal VI, 28-29; anal II, 27-28; 17-19 radios pectorales.

Oliva a café uniforme; puede cambiar a un color azul pálido; cola con amplios radios negruzcos, las membranas interradiales, margen angosto y filamentos blancos; juveniles con un delgado margen dorsal y anal blanco, un parche blanco en forma de montura sobre la base de la cola, aleta caudal oscura con margen blanco.

Tamaño: 100 cm.

Hábitat: juveniles y subadultos bentónicos sobre arrecifes y costas rocosas, adultos en aguas abiertas cerca de frentes arrecifales expuestos.

Profundidad: 0-122 m; subadultos usualmente 5-15 m, adultos usualmente 10-30 m.

Una especie del Indo-Pacífico documentada como vagabundo en la Isla del Coco y el Atolón de Clipperton.

Abundance: Común.
Cites: No listado.
Climate Zone: Ecuatorial (Costa Rica hasta Ecuador + Galápagos, Clipperton, Cocos, Malpelo).
Depth Range Max: 122 m.
Depth Range Min: 0 m.
Diet: larvas pelágicas de peces; zooplancton; microalgas bentónicas.
Eastern Pacific Range: Northern limit=11; Southern limit=6; Western limit=-110; Eastern limit=-87; Latitudinal range=5; Longitudinal range=23.
Egg Type: Pelágico; Larva pelágica.
Feeding Group: Omnívoro; Planctivoro.
FishBase Habitat: Asociado a Arrecifes.
Global Endemism: Todo Pacífico (Oeste + Central + Este); Indo-Pacífico solo (Océanos Indico + Pacífico); POT no endémico; "Transpacífico" (Pacífico Este + Central y/u Oeste); Todas las especies.
Habitat: Corales; Asociado a arrecife (arrecife + bordes-columna de agua y fondo suave); Rocas; Arrecife (rocoso y/o coralino); Arrecife solamente.
Inshore Offshore: Costeros; Solamente Costeros.
IUCN Red List: No evaluado / Listado.
Length Max: 100 cm.
Regional Endemism: Solo islas; Isla (s); Pacífico Oriental Tropical (POT) no endémico; Pacífico Oriental no endémico; Todas las especies.
Residency: Vagabundo.
Salinity: Marino; Solo Marino.
Water Column Position: Fondo; Media Agua; Cerca del Fondo; Fondo + columna de agua;

Scientific source:

Vinculos a otros sitios

  • Allen , G.R. and Robertson, D.R., 1997., An Annotated Checklist of the fishes of Clipperton Atoll, Tropical Eastern Pacific., Revista de Biologia Tropical, 45:813-843.
  • Osburn , R. C. and Nichols, J. T., 1916., Shore Fishes Collected by the 'Albatross' Expedition in Lower California with Descriptions of New Species., Bull. Amer. Mus. Nat. Hist., 35:139-181.
  • Quoy , J. R. C. and Gaimard, J. P., 1824., Description des Poissons. Chapter IX. In: Freycinet, L. de, Voyage autour du Monde...exécuté sur les corvettes de L. M. "L'Uranie" et "La Physicienne," pendant les années 1817, 1818, 1819 et 1820. Paris., Voyage Uranie, Zool., :1-328.
  • Robertson , D.R. and Allen, G.A., 1996., Zoogeography of the shorefish fauna of Clipperton Atoll., Coral Reefs, 15:121-131.
  • Smith , M. M. and Heemstra, P., 1986., Smith's Sea Fishes. Johannesburg: Macmillan South Africa. 1047 pp., Macmillan South Africa:1047pp.

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Following modified from Australian Faunal Directory
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http://biodiversity.org.au/afd/taxa/daa118ea-4bcf-42b0-ada6-5df92aa5f5ce/ ---> https://biodiversity.org.au/afd/taxa/daa118ea-4bcf-42b0-ada6-5df92aa5f5ce/
&pull 20q v5.145 20180528: Error 404 Not Found https://biodiversity.org.au/afd/taxa/daa118ea-4bcf-42b0-ada6-5df92aa5f5ce/

Following modified from Taiwan Biodiversity National Information Network
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Kingdom Animalia  
 Phylum Chordata  
 Class Actinopterygii  
 Order Perciformes  
 Family Acanthuridae  
 Genus Naso  
  Naso annulatus    (Quoy & Gaimard, 1825) 
Provider: Chen, Jeng-Ping 
hierarchy tree    download xml    download txt    Chinese Page    
Synonyms: Naso herrei Priodon annulatus   details
Citation: 臺灣魚類誌(沈等, 1993); Fishes of the Great Barrier Reef and Coral Sea(Randall et al.,1990)
Character: Dorsal-fin rays V, 28-29 ; anal-fin rays II, 27-28 ; pectoral-fin rays 17-19 ; pelvic-fin rays I,3. Body plain brown or olivaceous, paler below; subadults with black caudal rays, narrow margins and white caudal filaments; pectoral fins with white distal margins.  
Habitat: Occurs in shallow clear coastal to outer reef slopes, but large adults steep drop-offs in more than 25m, usually in small groups, but occasionally in large schools. Feed on large zooplankton and benthic algae during the day, and shelter within the reef du 
Distribution: Indo-Pacific: East Africa to the Hawaiian, Marquesan, and Tuamotu islands, north to southern Japan, south to Lord Howe Island; throughout Micronesia. Mascarene, Line and Society Islands. Taiwan: South, Hsiaoliuchiu, Penghu, Lanyu, Lyudao, East, North-East 
Utility: Commercial aquarium species. 
Name Code: 381279
Suggested Link    The Fish Database of Taiwan    FishBase    Discover Life    World Register of Marine Species (WoRMS)  
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Following modified from CalPhotos
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http://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Naso+annulatus&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Animal ---> https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Naso+annulatus&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Animal

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Number of matches : 2
Query: SELECT * FROM img WHERE ready=1 and taxon like "Naso annulatus%" and (lifeform != "specimen_tag" OR lifeform != "Animal") ORDER BY taxon

Click on the thumbnail to see an enlargement

Naso annulatus
Naso annulatus
Kala Kea
ID: 0000 0000 1001 0016 [detail]
© 2001 Joseph Dougherty/ecology.org

Naso annulatus
Naso annulatus
ID: 4444 4444 1106 0433 [detail]
© 2006 Moorea Biocode

Using these photos: A variety of organizations and individuals have contributed photographs to CalPhotos. Please follow the usage guidelines provided with each image. Use and copyright information, as well as other details about the photo such as the date and the location, are available by clicking on the [detail] link under the thumbnail. See also: Using the Photos in CalPhotos .   

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Following modified from FishBase
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http://www.fishbase.org/Summary/speciesSummary.php?genusname=Naso&speciesname=annulatus ---> http://www.fishbase.se/summary/Naso-annulatus.html

Common name (e.g. trout)

Genus + Species (e.g. Gadus morhua)

Naso annulatus   (Quoy & Gaimard, 1825)

Whitemargin unicornfish Add your observation in Fish Watcher
Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Naso annulatus   AquaMaps   Data sources: GBIF OBIS
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Pictures | Videos     Google image Image of Naso annulatus (Whitemargin unicornfish) Naso annulatus
Picture by Randall, J.E.

Classification / Names Common names | Synonyms | Catalog of Fishes ( gen. , sp. ) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Acanthuridae (Surgeonfishes, tangs, unicornfishes) > Nasinae
Etymology: Naso: Latin, nasus = nose (Ref. 45335 ) .

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 ); 32°N - 32°S

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 ).

Biology     Glossary (e.g. epibenthic)

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. 115185 )

  Least Concern (LC)  

CITES (Ref. 115941 )

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

FAO areas
Food items
Food consumption
Common names
Egg development
Larval dynamics
Aquaculture profile
Allele frequencies
Mass conversion
Stamps, Coins Misc.
Swim. type
Gill area


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Internet sources

Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes ( gen. , sp. ) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank( genome , nucleotide ) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | National databases | Otolith Atlas of Taiwan Fishes | Public aquariums | PubMed | Reef Life Survey | SeaLifeBase | Tree of Life | Wikipedia( Go , Search ) | World Records Freshwater Fishing | Zoological Record

Estimates of some properties based on models

Preferred temperature (Ref. 115969 ): 23.5 - 28.3, mean 27.1 (based on 335 cells). Phylogenetic diversity index (Ref. 82805 ):  PD 50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high]. Bayesian length-weight: a=0.02239 (0.01262 - 0.03971), b=2.98 (2.82 - 3.14), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245 ). Trophic Level (Ref. 69278 ):  2.1   ±0.09 se; Based on food items. Resilience (Ref. 69278 ):  Low, minimum population doubling time 4.5 - 14 years (K=0.213; Tmax=23). Vulnerability (Ref. 59153 ):  Moderate to high vulnerability (45 of 100) .

Entered by Capuli, Estelita Emily Modified by Ortañez, Auda Kareen Fish Forum
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