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Naso caesius Gray unicornfish, Silver-blotched Unicorn

Naso caesius is commonly referred to as Gray unicornfish, Silver-blotched Unicorn. Difficulty in the aquarium: Only for advanced aquarists. A aquarium size of at least 10000 Liter is recommended. Toxicity: Toxic hazard unknown.


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lexID:
1952 
AphiaID:
278004 
Scientific:
Naso caesius 
German:
Silberner Nasendoktor 
English:
Gray Unicornfish, Silver-blotched Unicorn 
Category:
Surgeonfishes & Tangs 
Family tree:
Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Acanthuridae (Family) > Naso (Genus) > caesius (Species) 
Initial determination:
Randall & Bell, 1992 
Occurrence:
American Samoa, Australia, Bakers Island, Chesterfield Islands, Christmas Islands, Cook Islands, Coral sea (Eastern Australia), Fiji, French Polynesia, Gilbert Islands, Guam, Hawaii, Howland Island, Indo Pacific, Johnston Atoll, Kiribati, Marschall Islands, Micronesia, Nauru, New Caledonia, New South Wales (Australia), Niue, Northern Mariana Islands, Palau, Papua New Guinea, Phoenix Islands, Pitcairn Islands, Queensland (Australia), Samoa, the Cocos Islands / Keeling Islands, the Society Islands, Tokelau, Tonga, Tuvalu, United States Minor Outlying Islands, Vanuatu, Wallis and Futuna, Western Pacific Ocean 
Sea depth:
3 - 50 Meter 
Size:
17.72" - 23.62" (45cm - 60cm) 
Temperature:
73.4 °F - 78.8 °F (23°C - 26°C) 
Food:
Flakes, Frozen Food (large sort), Mysis, Plankton 
Tank:
2199.78 gal (~ 10000L)  
Difficulty:
Only for advanced aquarists 
Offspring:
Not available as offspring 
Toxicity:
Toxic hazard unknown 
CITES:
Not evaluated 
Red List:
Least concern (LC)  
Related species at
Catalog of Life:
 
Author:
Publisher:
Meerwasser-Lexikon.de
Created:
Last edit:
2019-09-09 23:00:24 

Info

Naso caesius - 45-60 cm ..... is a big fish :-)

The surgeonfishes (Acanthuridae), popular in marine aquaristics, are also called surgeonfishes.
They have horn-like blades in front of the tail root, they use as mainly defensive weapon (defense) against predators, but this sharp weapon is also used in fights among themselves.
Deep cuts in the body of opponents can cause permanent injuries, but often death occurs immediately.
If surgeonfishes are to be kept in pairs in an aquarium, fights between the fishes can be the order of the day, we could observe this several times with the very popular Hawaiian surgeonfish (Zebrasoma flavescens).
The scalpel-like blades can cause deep cuts, this is also true for the careless aquarist who wants to touch or catch the fish with unprotected hands.

Another problem can occur if one wants to catch surgeonfish with a landing net and transfer them after catching, the horn blade can easily get caught in the net.

Caution: Careless handling of the animal can cause deep cuts!

External links

  1. FishBase (multi). Abgerufen am 07.08.2020.
  2. Fishes of Australia (en). Abgerufen am 07.08.2020.
  3. IUCN Red List of Threatened Species (multi). Abgerufen am 07.08.2020.
  4. World Register of Marine Species (WoRMS) (en). Abgerufen am 07.08.2020.

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