|Latin name||Naso lituratus - (Forster, 1801)|
|Local name||Naso Tang|
|Family||Acanthuridae - Naso|
|Max length||50 cm (19,7")|
|Minimum volume||900 cm (237 gal)|
|Suitable for aquarium||Suitable with care|
|Reef safe||Always reef safe|
|Aggressiveness||Might be aggressive towards similar species|
Macroalgea (Eg. seaweed / nori)
Microalgea (Eg. spirulina)
Small crustaceans (Krill, mysis, artemia...)
This species is known to jump out of open aquaria.
There are some experienced aquarists who have problems keeping this species alive, whilst some others are succesful and keep it for many years.
If one is one of the unlucky ones, it can happen that the fish suddenly die of unknown causes, after some time in captivity, even though it apparently looked healthy.
These fish should be kept in a well run aquarium where they can "graze" algae from rocks and stones.
If there are insufficient algae on the rocks, it is important to feed more frequently and supplement with algae rich food e.g. Spirulina.
This species revels in swimming and requires an aquarium with ample space.
This species requires places to hide, especially when newly introduced into the aquarium.
This species can eat large amounts of algae (relative to their size) from rocks, like green hair algae and filamentous algae.
As it doesn’t eat every algae type, in case of a specific algae plague, find out more precise information.
Even though these fish enjoy a diverse type of frozen foods, it is imperative that its primary food, is algae based, thus ensuring that the fish`s immune system remains healthy.
This can, for example, be plant based fish flakes, Nori seaweed or similar.
It can problematic to get this Surgeonfish to feed on flakes and nori seaweed in the beginning. As it feeds primarily on macro algae in the wild, it should be fed plenty of this nori seaweed and similar foods.
To thrive, species in the Naso genus, normally demand large aquaria, both because of their size, but also to fulfil their need for swimming space.
Like other Surgeonfish, Naso, or Unicornfish, eats a great amount of algae, which should reflect in their food. They need more algae based food then other species of Surgeonfish, this one must be aware of so as not to create nutrition problems.
When newly introduced Naso can be in the aquarium without eating for some time, but they normally begin to eat within a week.
They are, on the whole a peaceful species in relation to other Surgeonfish.
It is important that one chooses a healthy individual at the petshop, i.o.w. a fish that is active, shows normal behaviour and does not look too thin. If it looks poorly one has a challenge on ones hand, especially when the fish takes its time to start eating.
Some sources report, that large Naso Surgeonfish can in some cases scratch acrylic and glass, since their scalpel grows larger then others of the species.
Surgeonfish (Acanthuridae) live primarily of different types of algae, making it a popular choice for coral aquariums, as they help to keep the aquarium algae free.
Most Surgeonfish have a scalpel by the caudal fin, used to defend themselves. It can cause some deep lacerations, so pay attention if the fish start to fight and when handling the fish.
When in the aquarium, they will spend most of their time swimming around and nibbling the algae from the stones. Surgeonfish will rarely irritate corals or invertebrates. Large Palettes/Blue tangs can be an exception.
The Surgeonfish are not typically aggressive towards other types of fish. If more Surgeonfish are added to the aquarium, they will establish a hierarchy. It is best to add the most aggressive species last and to ensure that there are sufficient hiding places, as they prefer to have their own individual sleeping area.
If multiple aggressive species are added to the same aquarium, one runs the risk of one of them dying due to stress. One must therefore be cautious about adding multiple Acanthurus species or Zebrasoma xanthurum into the same aquarium. A combination of the different genera will normally get along well, although the more aggressive species can still be challenging.
|Distribution||Pacific Ocean: Honshu, Japan south to the Great Barrier Reef and New Caledonia and east to the Hawaiian Islands, French Polynesia, and Pitcairn. Eastern Pacific: Clipperton Island. Once regarded a wide-ranging Indo-Pacific species, the Indian Ocean po|
|German common names||
|English common names||
Pacific orange-spine unicorn
|Danish common names||
|French common names||
Nason à éperons oranges
Mark Denaro. 2012. The Naso Tang - Tropical Fish Hobbyist - (English)
Bob Fenner. Unicorn Tangs, The Genus Naso, Family Acanthuridae - Wet Web Media - (English)
James W. Fatherree. 2009. Aquarium Fish: Surgeonfishes, A.K.A. the Tangs - Advanced Aquarist - (English)
Bob Fenner. Surgeons, Tangs and Doctorfishes, Family Acanthuridae - Wet Web Media - (English)
2013. Kirurgfisk - Saltvandswiki - (Danish)
"Minimum volume" indicates the size of the tank needed to house this species under optimal conditions.
This is based on a medium size animal, which you want to keep for several years.
It might be possible to keep smaller specimens for a limited period in a smaller tank. A larger tank might be needed for fully-grown specimens.
"Hardiness" indicates how resistant this species is to disease and how well i tolerates bad conditions in general.
Some species doesn't handle transportation very well, but that doesn't mean that the species isn't hardy under the right conditions.
In this case, a "normal" aquarium is a reef aquarium with mixed corals or a fish only aquarium with an approximately salinity of 1.026 (sg) and a temperature close to 26°C.
Species requiring more than a 4000-liter tank are considered not suitable for home aquarium.
Special aquariums may cover tanks with low salinity, sub-tropical temperature, deep sand bed, sea grass etc.
Always reef safe: No sources indicate that this species will harm corals or other invertebrates.
Often reef safe: Only a few aquarists has reported problems keeping this species with corals and other invertebrates.
Reef safe with caution: This species may be a threat to some types of invertebrates.
Reef safe with luck: Most specimens will harm corals and/or other invertebrates, but you might be lucky.
Not reef safe: This species is a threat to most corals and/or other invertebrates.