Name: Purple Tang
Brand: TSA Fish
SKU: w_fish041326.04
Price: 539.50 USD
Availability: InStock

Purple Tang

$539.50

Purple Tang

$539.50

Goes well with:

Zebrasoma Xanthurum

Care Level Moderate

Temperament Aggressive

Reef Safe Yes

Max Size 9 inches

Tank Size 100 Gallons

Diet Omnivore

Origin Red Sea

Food

Nori Spirulina Mysis

Tags

Tang Reef Safe Algae Control

Diet & Feeding

Diet and Feeding:
Purple Tangs are primarily herbivorous, requiring a diet rich in marine-based algae and seaweed. Offer a variety of foods such as nori, spirulina, and high-quality flake or pellet foods designed for herbivorous fish. Supplement their diet with occasional offerings of mysis shrimp or brine shrimp to ensure balanced nutrition. Feed small amounts multiple times a day to mimic their natural grazing behavior. Providing a clip with seaweed sheets in the tank encourages natural foraging and helps maintain their vibrant coloration.

Behavior

The Purple Tang (Zebrasoma xanthurum) is an active swimmer that requires a minimum tank size of 100 gallons to accommodate its maximum size of 9 inches. It is known for its aggressive temperament, particularly towards other tangs and similarly shaped fish, due to its territorial nature. This species is reef safe, making it suitable for reef aquariums where it can help control algae growth. When introducing new tank mates, it is advisable to choose species that are either equally assertive or non-threatening, and to introduce the Purple Tang last to minimize territorial aggression. The tank should have plenty of hiding spaces and visual barriers to reduce stress and aggressive encounters. The Purple Tang is an omnivore with a preference for algae, and its diet should include algae or nori sheets, spirulina, and meaty frozen foods to ensure balanced nutrition.

FAQs

How can I reduce aggression when introducing a Purple Tang into an established reef tank with other tangs already present?

Introduce the Purple Tang last or alongside similarly sized tangs to spread attention. Rearrange rockwork right before introduction to reset territories. Use an acclimation box for 2–7 days so existing fish see but can’t attack the new tang. Avoid mixing with other Zebrasoma species (Yellow, Sailfin, Gem) in smaller systems; in larger tanks (180+ gallons) introduce multiple Zebrasoma at the same time and ensure heavy feeding to blunt aggression. Dim the lights during first release, and feed nori immediately to distract. If a resident tang is particularly dominant, temporarily remove and reintroduce it after the new fish has settled.

Why does my Purple Tang constantly graze on live rock but ignore the sheet of nori I put in the tank?

Purple Tangs are natural browsers and may prefer the texture, motion, and microfauna of live rock. They may ignore nori if the sheet is too stiff, unfamiliar, or poorly placed. Use high-quality dried seaweed (red or green), soak it briefly in tank water to soften, and secure it on a clip near where the fish already grazes or in higher flow so it “waves” naturally. Start with small pieces mixed with foods the tang already accepts (e.g., mysis stuck to the nori). Offer nori daily at the same time, remove uneaten portions after a few hours, and avoid garlic-heavy soaks that can make it taste odd.

My Purple Tang’s body turned darker and the yellow tail looks faded after a few months. Is this normal, and can the color be improved?

Mild darkening with age is normal, but sudden or marked dulling usually points to stress, poor diet, or suboptimal water quality. Keep nitrates under ~20 ppm and phosphates under ~0.1 ppm with stable salinity and temperature. Provide a varied herbivore-heavy diet: multiple types of macroalgae/nori (red, green, brown), spirulina-based pellets, and occasional meaty foods for protein. Add vitamin and HUFA supplements (e.g., Selcon) a few times per week. Provide strong, consistent lighting and ample swimming space. Reduce bullying and ensure the tang is not competing excessively for food. With improved conditions, color typically brightens over several weeks.

What tank size and aquascape specifically suit a Purple Tang long term, considering their constant swimming behavior?

For long-term housing, a minimum of 120 gallons with a 4-foot length is often cited, but 5–6 feet (150–180 gallons) is far better for sustained health and reduced aggression. Prioritize open swimming lanes along the front and back of the tank with rockwork concentrated in the center or ends, forming arches and channels. Avoid a solid wall of rock from glass to glass. Leave at least 4–6 inches of clearance between rock and glass for the fish to cruise around. Provide multiple caves and overhangs so the tang can retreat and sleep safely. Strong, broad-flow from multiple sources encourages natural, continuous swimming.

How can I tell if my Purple Tang is developing Head and Lateral Line Erosion (HLLE), and what husbandry changes help reverse it?

Early HLLE appears as small pits or pale erosions around the eyes and along the lateral line, often with fraying of facial scales. It progresses to larger, shallow lesions if not corrected. Improve water quality (stable parameters, reduced dissolved organics, consistent carbon use in a reactor rather than loose bags, or temporarily remove carbon to see if it helps). Add high-quality algae-based foods, vitamin C, and fatty acid supplements several times per week. Use high-quality salt mix, perform regular water changes, and avoid stray voltage (check with a multimeter, use a grounding probe if needed). Provide high-quality, varied nutrition and a low-stress environment; mild to moderate HLLE often partially heals or stabilizes under better conditions.

WYSIWYG - Approx. Size: 3""

Introduction to Saltwater Tangs

Tangs, also known as Surgeonfish, are active, fast-swimming herbivores known for their bold coloration, streamlined bodies, and role in controlling algae growth. Found in coral reefs worldwide, tangs require large aquariums with strong water flow to accommodate their constant movement and grazing habits. While peaceful toward most tankmates, tangs can be territorial and aggressive toward other tangs, particularly those of the same genus. They are best suited for well-established reef tanks with ample swimming space and hiding spots.

Care Requirements

Care Level: Moderate – Requires large tank Minimum Tank Size: 75 – 180+ gallons Smaller species (e.g., Kole Tang) – 75+ gallons Larger species (e.g., Achilles Tang, Blue Hippo Tang) – 125-180+ gallons Aquarium Setup: Requires open swimming areas, rockwork for hiding, and high water flow Tangs are strong swimmers that thrive in environments with high oxygen levels and strong filtration. They are prone to stress-related illnesses like Ich, making stable water parameters essential.

Diet & Nutrition

Tangs are herbivores that require a diet rich in plant-based foods for optimal health and vibrant coloration. Diet: Herbivorous – Prefers marine algae, seaweed, and plant-based foods

Recommended Foods:

Nori and seaweed sheets (offered daily) Spirulina-based flakes and pellets Blanched vegetables like zucchini and spinach Occasional protein-based foods like mysis shrimp for variety A nutrient-rich diet prevents nutritional deficiencies and lateral line erosion (HLLE), a common issue in tangs.

Lifespan & Growth Rate

Lifespan: 8-20+ years Growth Rate: Moderate to Fast – Many species reach 8-12 inches Tangs require long-term care and proper nutrition to reach their full lifespan and size.

Temperament & Compatibility

Temperament: Semi-Aggressive – Generally peaceful but territorial toward other tangs Reef Safe? Yes – Does not harm corals or invertebrates Tangs do well in reef aquariums and community tanks with: Clownfish Wrasses Angelfish Large gobies They may become aggressive toward other tangs, especially those with similar body shapes or coloration. Introducing multiple tangs at once in a large tank can help reduce aggression.

Common Challenges & Considerations

Prone to Marine Ich: Tangs are susceptible to Ich and other parasites, so quarantine before introducing to display tanks. Territorial Behavior: Can be aggressive toward new tangs, requiring careful introduction. Water Conditions Temperature: 74-80°F dKH (Alkalinity): 8-12 pH: 8.1-8.4 Specific Gravity: 1.020-1.025 Tangs thrive in high-quality reef conditions with strong filtration to support their active swimming habits.

Color Varieties & Popular Species

Tangs come in a wide range of colors and patterns, making them one of the most visually striking fish families in the hobby. Yellow Tang (Zebrasoma flavescens) – Bright yellow body, one of the most popular reef fish Blue Hippo Tang (Paracanthurus hepatus) – Electric blue body with black markings, also known as the "Dory" fish Kole Tang (Ctenochaetus strigosus) – Brownish body with blue highlights, a fantastic algae grazer Achilles Tang (Acanthurus achilles) – Black body with orange crescent tail, one of the most challenging tangs to keep

Tags: Reef Safe Tang WYSIWYG Fish

SKU: w_fish041326.04