Purple Tang

Scientific Name
Zebrasoma xanthurum
Family Name
Acanthuridae
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Quick Care Details (Table)
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Livestock Characteristics Value
Care Level Moderate
Temperament Semi-Agressive
Diet Herbivore
Maximum Size 10 Inches
Minimum Tank Size 125 Gallons
Reef Safe Yes
Temperature Range 76-82°F
PH Range 8.1-8.4
Alkalinity 8-12 dKH
Salinity 1.023-1.025
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Care Details, Temperament, Diet, and Aquarium Requirements
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Aquascape:

  • Provide ample live rock structures for the Purple Tang to graze on algae and seek hiding spots.
  • Create an open swimming area to accommodate its active behavior.
  • Incorporate caves or crevices to mimic its natural reef habitat and promote a sense of security.

Substrate:

  • Use a fine-grained sand substrate, which resembles the natural sandy seabed where Purple Tangs forage.
  • Avoid using sharp or coarse substrates that could harm the fish's delicate skin.

Disease Prevention:

  • Quarantine new fish additions before introducing them to the main tank to prevent disease transmission.
  • Maintain excellent water quality through regular testing, proper filtration, and frequent water changes.
  • Avoid overstocking and ensure compatibility to minimize stress and potential disease outbreaks.

Filtration:

  • Use a high-quality protein skimmer to remove organic waste and maintain water clarity.
  • Employ biological filtration provided by live rock to help establish a stable nitrogen cycle.
  • Consider using a reliable mechanical filter to remove debris and prevent ammonia spikes.

Lighting:

  • Use lighting systems that provide the appropriate spectrum for coral health (if keeping a reef tank) and enhance the fish's vibrant colors.
  • Provide a consistent lighting schedule to mimic natural day-night cycles.

Water Flow:

  • Ensure sufficient water circulation to prevent dead spots and distribute nutrients evenly.
  • Adjust water flow to match the fish's natural habitat, as they come from areas with variable current strength.

Hardiness:

  • Purple Tangs are generally considered hardy when provided with optimal care and water conditions.
  • However, they may be more sensitive to stress, especially during acclimation or when kept in suboptimal conditions.

Acclimation:

  • Gradually acclimate the Purple Tang to its new environment by floating the transport bag in the tank and gradually adding tank water to the bag.
  • Take the time to adjust the water parameters and temperature to match the tank's conditions, reducing the risk of shock or stress.

Behavior and Social Interaction:

  • The Purple Tang exhibits intriguing behavior and social interactions in the aquarium. Understanding these aspects is crucial for providing a suitable environment for this species.

Aggression:

  • The Purple Tang can be territorial and may exhibit aggression towards similar-shaped fish or other tangs.
  • Provide ample hiding spots and a spacious tank to minimize aggressive interactions.
  • Avoid overcrowding the aquarium, as this can lead to increased territorial behavior.

Breeding:

  • Breeding the Purple Tang in captivity is challenging and rare, as they require specific conditions and stimuli to initiate spawning.
  • Successful breeding typically occurs in large, mature aquariums with stable water parameters and proper tank setup.
  • Inducing breeding in home aquariums is seldom successful, and most Purple Tangs available for purchase are wild-caught.

Compatibility:

  • Due to its territorial nature, it is best to keep the Purple Tang as the only tang species in the aquarium.
  • Choose tankmates that are peaceful, not similar in shape or color, and can handle the same water conditions.
  • They are reef safe and rarely ever pick you corals unless you have some algae growing on them.  

Activity Level:

  • The Purple Tang is an active and agile swimmer, constantly foraging for algae and grazing on surfaces like live rock.
  • Providing sufficient space and water flow allows the fish to engage in its natural behaviors.

Clean-up Crew:

  • While the Purple Tang is herbivorous and grazes on algae, it may not entirely control all algae growth in the tank.
  • They will have a hard time getting the nooks and crannies and between your corals.
  • Consider adding a clean-up crew of small marine snails and hermit crabs to help keep algae in check.

Schooling or Shoaling Behavior:

  • The Purple Tang is not a schooling or shoaling fish. It tends to be more solitary or form loose aggregations in the wild.
  • In captivity, it is best kept as an individual or in a well-maintained community with proper space and compatible tankmates.

Lifespan (Life Expectancy):

  • The Purple Tang can have a long lifespan if provided with optimal care and suitable living conditions.
  • In well-maintained aquariums, they can live anywhere from 10 to 20 years or even longer with proper care.

Dry Foods:

  • High-quality marine pellets or flakes specifically formulated for herbivorous fish are suitable for the Purple Tang's diet.
  • Look for products that contain a blend of algae, spirulina, and other plant-based ingredients.

Frozen Foods:

  • Offer frozen foods like mysis shrimp, brine shrimp, and krill. These provide essential nutrients and are readily accepted by the Purple Tang.
  • Frozen foods should be thawed before feeding to ensure easy digestion.

Live Foods:

  • Some live foods, such as copepods and amphipods, can be beneficial to the Purple Tang's diet.
  • Consider having a refugium or separate culture setup to cultivate these small organisms for a continuous live food source.

Vegetables:

  • Purple Tangs are herbivores, and vegetables play a vital role in their diet.
  • Offer blanched and finely chopped vegetables like seaweed, spinach, nori, or romaine lettuce.

Algae:

  • Algae is a natural part of the Purple Tang's diet. Provide algae sheets or clips with live rock containing algae growth for grazing.
  • Some aquarists encourage controlled algae growth in the tank as a food source for their tangs.

Feeding Schedule:

  • The Purple Tang should be fed at least twice a day to ensure they receive adequate nutrition.
  • Spread out feedings throughout the day to mimic their natural foraging behavior.
  • Avoid overfeeding to maintain good water quality and prevent health issues.

Supplemental Foods:

  • Consider supplementing their diet with vitamin and mineral supplements occasionally to enhance their overall health.
  • Avoid excessive use of supplements, as a balanced and varied diet should provide most of the required nutrients.

Tank Size and Measurements:

  • Minimum tank size: 125 gallons (473 liters).
  • Recommended tank size: 150 gallons (567 liters) or more.
  • Tank length: At least 6 feet (183cm) to accommodate their active swimming behavior.
  • Ideal tank dimensions: 72 inches (122 cm) in length, 18 inches (46 cm) in width, and 20 inches (51 cm) in height or larger.

Species Maximum Size:

  • The Purple Tang can grow up to 10 inches (25 cm) in length in the right conditions.
  • Providing a sufficiently large tank allows the fish to reach its full potential size.

Water Temperature:

  • Maintain a stable water temperature between 76°F to 82°F (24°C to 28°C).
  • Avoid fluctuations in temperature to prevent stress and health issues.

pH (Acidity/Alkalinity):

  • Aim for a pH level between 8.1 and 8.4 to replicate natural seawater conditions.
  • Keep the pH stable to support healthy biological processes.

Nitrate (NO3) Levels:

  • Keep nitrate levels as low as possible, ideally below 10 ppm.
  • Regular water changes and proper filtration help control nitrate levels.

Salinity:

  • Maintain a specific gravity (salinity) of around 1.023 to 1.025 (approximately 30 to 35 parts per thousand).
  • Use a reliable refractometer or hydrometer to measure salinity accurately.

Phosphate (PO4):

  • Keep phosphate levels low, ideally below 0.03 ppm.
  • Prevents excessive algae growth and maintains water quality.

Alkalinity (dKH):

  • Maintain carbonate hardness (alkalinity) at around 8 to 12 dKH.
  • Provides buffering capacity for stable pH levels.

 

 

History, Popularity, History and Species Variety Details
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The History, Popularity and Habitat

History:

The Purple Tang (Zebrasoma xanthurum) is a species of marine fish that has captivated aquarists for its striking appearance and vibrant colors. This species was first described by the French naturalist Achille Valenciennes in 1835. Native to the Indo-Pacific region, the Purple Tang is commonly found in the waters of the Red Sea, the eastern coast of Africa, and various Indian Ocean islands. Over the years, it has become a popular choice among marine aquarium enthusiasts due to its stunning purple body, bright yellow tail, and striking blue and yellow markings. The Purple Tang's unique coloration and active swimming behavior make it a sought-after addition to home aquariums, especially those designed to mimic the beauty of coral reefs.

Popularity:

The Purple Tang's popularity in the aquarium trade is largely attributed to its vibrant colors and eye-catching appearance. Its bright purple body stands out against the blue hues of a typical marine aquarium, creating a stunning visual contrast. The addition of a bright yellow tail and blue highlights further adds to its allure. Aquarists are drawn to the Purple Tang for its beauty and dynamic presence, which can make it a centerpiece in a well-maintained reef or marine fish tank. However, despite its popularity, prospective owners should be aware of its territorial behavior and specific care requirements. Ensuring a suitable environment and compatible tankmates is crucial to maintaining the Purple Tang's well-being and minimizing potential stress-related issues.

Habitat:

In its natural habitat, the Purple Tang is commonly found in coral reefs and reef-associated areas, often at depths ranging from 15 to 90 feet (5 to 30 meters). It prefers areas with abundant algae growth, as it primarily feeds on various types of marine algae. The fish is well-adapted to the clear waters of the Indo-Pacific region, where it can enjoy moderate to strong water flow. The Purple Tang is a diurnal species, meaning it is most active during the daytime, foraging for algae and grazing on surfaces like live rock. In its natural environment, it is known to establish territories and defend them against other tangs and potential threats. In captivity, providing an environment that closely resembles its natural habitat, along with a varied and balanced diet, is essential for the well-being and long-term health of the Purple Tang.

Red Sea Purple Tang (Zebrasoma xanthurum var. flavescens): This variation is found specifically in the Red Sea region and is sometimes considered a subspecies or color variant of the Purple Tang. It is similar in appearance to the typical Purple Tang but may exhibit slight differences in color intensity.

Hybrid Variants: In the aquarium trade, hybrid variations of the Purple Tang may occasionally be encountered. These hybrids may result from interbreeding between different Zebrasoma species or color morphs, leading to unique color patterns and combinations.

Yellowtail Sailfin Tang (Zebrasoma xanthurum var. veliferum): This variation is often referred to as the "Yellowtail Sailfin Tang" due to the bright yellow coloration of its tail and fins. It is still considered a variation of the Purple Tang, and its overall body color is purple.

Yellow Tang (Zebrasoma flavescens): The Yellow Tang is a popular and iconic marine fish known for its bright yellow coloration. It has a more elongated body shape compared to the Purple Tang and lacks the purple coloration seen in the Purple Tang. It is native to the Hawaiian Islands and is commonly kept in aquariums.

Sailfin Tang (Zebrasoma desjardinii): The Sailfin Tang, also known as the Desjardin's Sailfin Tang, has a distinctive appearance with a sail-like dorsal fin and a rich mix of colors, including yellow, blue, and white. Its body coloration and patterns are quite different from the Purple Tang.

Gem Tang (Zebrasoma gemmatum): The Gem Tang is one of the rarest and most coveted tang species in the aquarium trade. It features a striking combination of black, white, and yellow patches on its body, resembling gemstones. Due to its scarcity and high demand, it is rarely available in the hobby.

Scopas Tang (Zebrasoma scopas): The Scopas Tang has a unique appearance with a brownish-gray body and pale white vertical stripes. Its coloration helps it blend into its natural habitat, providing camouflage from potential predators.

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Common Tank mates

  • Clownfish (Amphiprion species): Various clownfish species, such as Ocellaris Clownfish and Percula Clownfish, can coexist peacefully with Purple Tangs. These colorful and popular reef fish are known for their symbiotic relationship with anemones.
  • Gobies (Gobiidae family): Many small goby species are suitable tank mates for the Purple Tang. Their small size and peaceful nature make them excellent choices for community aquariums.
  • Cleaner Shrimp (Lysmata amboinensis): These helpful shrimp can form a beneficial cleaning crew and coexist peacefully with the Purple Tang.
  • Hermit Crabs (various species): Small, reef-safe hermit crabs can be great additions to the tank, contributing to algae control and substrate maintenance.
  • Chromis (Chromis species): These small schooling fish can add a lively dynamic to the tank and are generally peaceful.
  • Six-Line Wrasse (Pseudocheilinus hexataenia): This small and active wrasse is a beautiful addition to the tank and generally compatible with the Purple Tang.
  • Yellow Coris Wrasse (Halichoeres chrysus): These wrasses have a bright yellow body and are known for their peaceful nature.
  • Banggai Cardinalfish (Pterapogon kauderni): These small and docile fish are well-suited for peaceful community tanks and add an interesting social dynamic.
  • Firefish Dartfish (Nemateleotris magnifica): Firefish dartfish are peaceful and have stunning coloration, making them an excellent addition to reef aquariums.
  • Lyretail Anthias (Pseudanthias squamipinnis): These reef-dwelling fish add vibrant color and movement to the tank. Keep them in small groups, preferably all introduced simultaneously.
  • Nassarius Snails (Nassarius species): These scavenging snails help keep the sand bed clean and are compatible with the Purple Tang.
  • Cerith Snails (Cerithium species): These snails are excellent algae grazers and contribute to maintaining a healthy tank.

Breeding Purple Tangs (Zebrasoma xanthurum) in captivity is considered challenging and relatively rare. The main reason for this rarity is that Purple Tangs are pelagic spawners, meaning they release their eggs and sperm directly into the water column, and the larvae require specific care and conditions to survive and develop into juveniles.

Due to the complexity of rearing the larvae and the limited success in commercial breeding, only a few highly experienced and specialized marine fish breeders have managed to successfully breed Purple Tangs in captivity. These individuals or facilities often have extensive knowledge and resources to mimic the natural conditions required for the tang's successful reproduction.

To undertake such a breeding endeavor, breeders need access to suitable broodstock (male and female pairs) that are in optimal health and have been conditioned for spawning. They must also have access to highly controlled and well-maintained rearing tanks with appropriate filtration, water parameters, and the ability to provide specific larval diets, including live zooplankton and phytoplankton.

Purple Tang breeding programs are often conducted by dedicated professionals, research institutions, or advanced marine aquarium hobbyists who are deeply passionate about marine conservation and the sustainability of the aquarium trade. The successful captive breeding of marine fish, including Purple Tangs, is essential for reducing pressure on wild populations and supporting the hobby with sustainably sourced fish.

As breeding techniques and technologies advance, there may be more progress in the captive breeding of Purple Tangs and other challenging marine species. It's important to stay updated on the latest developments in marine fish breeding and conservation efforts to ensure the continued success and health of these beautiful marine creatures.

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Disease and Quarantine

Copper

  • Purpose: Copper treatment can be used for external parasites like marine ich and marine velvet in Purple Tangs, similar to other marine fish species.
  • Fish Tolerance: Purple Tangs, like many other tangs, can be sensitive to copper. It's crucial to monitor their behavior closely and maintain copper levels within safe and therapeutic ranges to prevent copper toxicity.

Hyposalinity:

  • Purpose: Hyposalinity can be employed to treat parasites like marine ich in Purple Tangs.
  • Fish Tolerance: Purple Tangs are generally tolerant of short-term exposure to reduced salinity, but gradual acclimation is necessary to minimize stress.

Tank Transfer:

  • Purpose: Tank transfer can be effective for isolating infected Purple Tangs to prevent disease spread to other tankmates.
  • Fish Tolerance: As with other fish, tank transfer can be done safely with proper acclimation and care.

Hydrogen Peroxide Bath:

  • Purpose: Hydrogen peroxide baths can be used to treat external parasites and bacterial infections on individual Purple Tangs.
  • Fish Tolerance: Hydrogen peroxide baths should be used with caution in Purple Tangs, as they can be sensitive to this treatment. Avoid prolonged exposure.

Freshwater Dip:

  • Purpose: A short freshwater dip can help remove external parasites from Purple Tangs before returning them to the main tank.
  • Fish Tolerance: Purple Tangs can tolerate a brief freshwater dip when acclimated properly, but care should be taken to avoid stress.

Methylene Blue:

  • Purpose: Methylene blue can be used to treat certain fungal and bacterial infections in Purple Tangs, similar to other marine fish.
  • Fish Tolerance: Many marine fish, including Purple Tangs, can tolerate methylene blue treatment when used at the recommended dosage.

Praziquantel:

  • Purpose: Praziquantel is effective against flukes and tapeworms in Purple Tangs.
  • Fish Tolerance: Purple Tangs generally tolerate praziquantel treatment when used as directed.

Metronidazole:

  • Purpose: Metronidazole can be used to treat certain internal parasites, such as hexamita, in Purple Tangs.
  • Fish Tolerance: Most Purple Tangs tolerate metronidazole treatment, but it's essential to follow dosing instructions and monitor their response.

Formalin:

  • Purpose: Formalin can be used to treat external parasites, bacteria, and fungal infections in Purple Tangs.
  • Fish Tolerance: Formalin can be harsh on fish, including Purple Tangs, and sensitive species may not tolerate it well. Careful monitoring is necessary.

Antibiotics:

  • Purpose: Antibiotics can be used to treat bacterial infections in Purple Tangs.
  • Fish Tolerance: As with other marine fish, Purple Tangs can tolerate antibiotics when used for the appropriate indications and dosages.
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Frequently Asked Questions
Livestock FAQ

What is the natural habitat of the Purple Tang?

The Purple Tang is native to the Indo-Pacific region, commonly found in the Red Sea, eastern coast of Africa, and various Indian Ocean islands.

What does the Purple Tang eat in the wild?

In the wild, Purple Tangs primarily graze on marine algae, including filamentous and macroalgae.

Can the Purple Tang be kept in a reef aquarium?

Yes, Purple Tangs can be kept in reef aquariums, but it's essential to provide ample algae and herbivore diets to meet their dietary needs.

Is the Purple Tang aggressive towards other tankmates?

Purple Tangs can be territorial and aggressive, especially towards other tangs and similar-shaped fish. Providing adequate space and hiding spots can help reduce aggression.

Can I keep multiple Purple Tangs in the same aquarium?

It's generally not recommended to keep multiple Purple Tangs in the same tank due to potential territorial conflicts. However, some experienced aquarists have had success with carefully introducing tangs at the same time to minimize aggression.

How can I tell if my Purple Tang is male or female?

Determining the gender of Purple Tangs based on external characteristics is challenging, and there are no reliable visual cues to differentiate males from females.

Can Purple Tangs tolerate copper treatment for parasites?

Purple Tangs, like other tang species, can be sensitive to copper. Careful monitoring and proper dosing are necessary to prevent copper toxicity.

Can Purple Tangs be bred in captivity?

Breeding Purple Tangs in captivity is challenging and relatively rare. It requires specialized conditions and expertise to successfully raise the larvae. Some scientifc researchers have had success and some commercial enterprise have large scale success.

Author's Name: rtorres
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