This species is known as
Clown Tang and the correct latin name is
Acanthurus lineatus. The family that this fish belongs to is called the
Tang family. (
e) Origin of this fish is
Maldives, Sri Lanka. (
e)
Character and suggestions regarding care
It is a poisonous species.
Clown Tang can grow up to 38 cm what is approximately 14 inches. In general, 1 specimen requires at least 4560cm
2 of water surface which is approximately 706 square inch. This fish should be kept in aquariums that are very large. (
e) Medium aquariums have at least 113 Litres (30 US Gallons). Large aquariums have at least 265 Litres (70 US Gallons). Very large aquariums hold at least 700 Litres (185 US Gallons).
It is not very difficult to keep the Clown Tang fish. (
e) The specific gravity (SG) should be between 1,020 and 1,025, the temperature between 23°C (73.4°F) and 26°C (78.8°F). The suggested level of pH (a measure of the acidity/basicity) is between 8.0 and 8.3 which is usual for most marine fish.
I have always found the Clown Tang to be a very attractive species of fish that makes a great addition to any reef aquarium. They are to be found under several common names such as Blue-lined Surgeonfish, Clown Surgeonfish, and even the Lined Tang for obvious reasons but they are all the same fish, to be sure that you have purchased the correct specimen you can order them by their Latin name which has been classified as Acanthurus lineatus. Their markings are very distinct beginning with a light blue background colour and on the top half of their body they display vertical bandings of black and yellow stripes with the blue background separating the markings.
They do have a reputation for being very aggressive and indeed some specimens maybe so but the specimen that I personally purchased proved to be very sedate and in time grew tame enough to accept food from my fingers, I never saw any harassment to other tank mates but I could have been one of the lucky keepers to get a specimen that was an exception to the rules.
The Clown Tang originate from the Indo-Pacific and prefer a reef environment, adult specimens can reach a length of up to 15 inches so if you are purchasing a juvenile specimen in a medium sized aquarium prepare to upgrade as these fish mature. They are classed as a solitary species often only coming together with other Clown Tangs for breeding purposes however some males will occupy areas of water with a harem of females, two males together is bad news as they will become highly aggressive towards each other, it is advised to keep one specimen in the aquarium to prevent any chance of this. It is best to have some experience of keeping saltwater fish as the Clown Tang is not a beginners species, they may take time to settle in the aquarium initially and may refuse food to start with but after a while, given the correct conditions they should settle and eat normally.
Caring for the Clown Tang
Plenty of Live Rock should be added to the aquarium, hiding places can be created by careful placement of the rock, you should also leave the front of the aquarium open to allow for large swimming areas as the Clown Tang is a very active species. As they prefer a reef environment the water flow should be high and the water needs to be well oxygenated, the pH should be set between 8.0-8.4 ( a standard pH for most reef aquariums) and the temperature should range between 22-26°C (72-78°F). The salinity of the water needs to beet between 1.023 -1.026 and regular water changes must be performed to maintain the water quality. The Clown Tang should be acclimatised very slowly, several hours of gentle mixing of the water to prevent any stress when adding the fish to the aquarium and it may be best to keep the lights dimmed until the Tang has had the chance to settle for a few hours.
The absolute minimum size for the aquarium is 150 gallons, these fish need a lot of swimming space, larger than this is more suitable so consider this factor carefully before purchasing a Clown Tang.
Feeding the Clown Tang
If your Clown Tang is kept correctly and has settled it should have a voracious appetite. As mentioned above they do take time to settle into the aquarium and you may have to tempt them with different foods during the first couple of days after the Clown Tang has been added. Have patience and they will eventually start to feed quite happily. They require a diet that has a high vegetable content as they are an herbivorous species, foods that should be offered include items such as a high quality flake, spirulina flake and dried seaweed. They will also require some meaty foods such as brine shrimp but do not offer them one large meal per day, it is far better for the Clown Tang to be offered small meals several times throughout the day. You should also encourage some algal growth in the aquarium as this will then give them the chance to graze around the aquarium inbetween mealtimes.
It is always best to check that the specimen of Clown Tang that you are considering purchasing does have a healthy appetite, loss of desire to eat can mean that the fish may have background health problems so always observe the Tang eating in the store to make sure that the specimen you purchase is in full health.
Breeding the Clown Tang
There are no reported cases of the Clown Tang breeding in the aquarium, indeed even attempting to sex these fish is virtually impossible. It is known that in the wild the Clown Tang is an egg scatterer and the fry are left to their own devices drifting in the water currents. Like most marine fish the moon has an effect regarding spawning periods, these usually occur around the time of the full moon.
Because Clown Tangs will fight with each other, you should house only one fish of this species (eventually in a community tank if it’s big enough), or you should keep a larger group of Clown Tangs with no other species in a big tank.
This fish can also be found in Fiji.
Thanks to
Kenneth Leonard for the picture. Copyright Ken Leonard.

Related fish profiles in the database
- Acanthurus Achilles (Achilles Tang)
- Acanthurus Bahianus (Ocean Surgeon)
- Acanthurus Blochii (Dark Surgeon, Ringtail Surgeonfish)
- Acanthurus Chirurgus (Doctorfish, Black Doctorfish)
- Acanthurus Coeruleus (Atlantic Blue Juvenile, Yellow Juvenile Coloration, Juvenile Atlantic Blue Tang)
- Acanthurus Dussumieri (Eyestripe Surgeonfish, Dussumier’s Surgeonfish, Hawaiian Surgeonfish, Ornate Sturgeonfish)
- Acanthurus Japonicus (Japan Surgeonfish, White-nose Surgeonfish, Powder Brown Tang)
- Acanthurus Leucosternon (Powder Blue Tang, Powder Blue Surgeon)
- Acanthurus Monroviae (Monrovia Doctorfish)
- Acanthurus Nigricans (White Cheek Tang, Whitecheek Surgeonfish)
- Acanthurus Olivaceus (Orange Shoulder Tang)
- Acanthurus Pyroferus (Eiblii Mimic Tang, Chocolate Surgeonfish)
- Acanthurus Sohal (Sohal Surgeonfish)
- Acanthurus Triostegus (Convict Tang)
- Acanthurus Xanthopterus (Cuvier’s Surgeonfish, Purple Surgeonfish, Ring-Tailed Surgeonfish, Yellowfin Surgeonfish)
- Ctenochaetus Hawaiiensis (Chevron Tang)
- Ctenochaetus Striatus (Striated Surgeonfish)
- Ctenochaetus Strigosus (Spotted Surgeonfish, Yellow Eye Kole Tang)
- Naso Annulatus (Whitemargin Unicornfish)
- Naso Brevirostris (Spotted Unicornfish)
- Naso Lituratus (Orangespine Unicornfish)
- Naso Unicornis (Bluespine Unicornfish)
- Naso Vlamingii (Bignose Unicornfish)
- Paracanthurus Hepatus (Blue Tang, Palette Surgeonfish)
- Prionurus Punctatus (Yellowtail Surgeonfish)
- Zebrasoma Desjardinii (Desjardin’s Sailfin Tang)
- Zebrasoma Flavescens (Yellow Tang)
- Zebrasoma Gemmatum (Spotted Tang)
- Zebrasoma Scopas (Twotone Tang)
- Zebrasoma Veliferum (Sailfin Tang)
- Zebrasoma Xanthurum (Yellowtail Tang)
See what other people say about
Acanthurus lineatus
Recommended readingBy Exotic Aquariums
Feel free to share your experiences regarding keeping
Acanthurus lineatus below. Every message will be held for approval by our moderators. It usually takes 24 hours to publish your comment. Before you ask anything, browse the
questions page, please.
Document modified on Sun Dec 22 18:18:27 UTC 2013
Document created on Wed Nov 28 16:26:12 UTC 2007
edit this page or
create a new fish profile
Thanks in advance.