|Latin name||Ctenochaetus strigosus - (Bennett, 1828)|
|Local name||Spotted surgeonfish|
|Family||Acanthuridae - Ctenochaetus|
|Origin||Australia, Indonesia, East Pacific, Central/West Pacific|
|Max length||14 cm (5,5")|
|Minimum volume||400 cm (106 gal)|
|Suitable for aquarium||Suitable with care|
|Reef safe||Always reef safe|
|Aggressiveness||Mostly peaceful but might be aggressive towards similar species|
Microalgea (Eg. spirulina)
Macroalgea (Eg. seaweed / nori)
Small crustaceans (Krill, mysis, artemia...)
Some individuals of this species can find it hard to acclimatize, but others are problem free.
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.
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.
There are 4 species in the genus Ctenochaetus which resemble each other closely. Together they comprise the Ctenochaetus strigosus complex.
C. cyanocheilus: Generally dark in colour and white on the tail. It lives in the central Pacific Ocean.
C. flavicauda: Has a white tail and caudul penduncle and lives in the south eastern Pacific Ocean.
C. strigosus: Has a gold band around the eyes and lives around the Hawaiian Islands.
C. truncatus: Has blue or gold spots and lives in the Indian Ocean.
The colour and pattern can vary, depending on where the fish originates. Their colour becomes darker as they get older.
This species is known to chase Jewelled Blennies (Salarias fasciatus) so much so that it can kill it.
The genus Bristletooth Tang (Ctenochaetus) contains a range of species, which are characterized by special teeth.
Like other Surgeonfish the Bristletooth Tang eats algae but with their specialized teeth they also scrape other organic material from rocks and stones. Ample sand and rocks are therefore imperative.
Overall the Ctenochaetus are peaceful and not quite as active, as many of the other surgeonfish. It is therefore suited to smaller aquaria.
Because of these their mild behaviour they are not a good combination with some of the more aggressive Surgeonfish.
Ctenochaetus are not so colourful as many other Surgeonfish. Some species are more vibrant in colour but this changes when they get to around 3 inch (7-8 cm).
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||Eastern Central Pacific: endemic to the Hawaiian Islands and Johnston Island. Western Central Pacific: Australia (Ref. 2334).|
|English common names||
Spotted bristletooth surgeonfish
|German common names||
|Danish common names||
|French common names||
Henry C. Schultz. 2003. Is it a Comb or a Bristle (Surgeonfish)? The Genus Ctenochaetus - Reefkeeping Magazine - (English)
Bob Fenner. The "Bristle-Tooth" Surgeonfishes, Genus Ctenochaetus - 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.