Bariene Tang - Acanthurus bariene

Small

$129.99

Bariene Tang - Acanthurus bariene

Reef Safe Tang

$129.99

SKU: TANGxBarieneS

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Diet

algae/nori spirulina mysis brine shrimp

Min Tank Size 250 gallons

Temperament Semi-aggressive

Reef Safe Yes

Care & Diet Feeding, nutrition, and best practices.

Diet Type: Omnivore

Diet and Feeding: The Bariene Tang is primarily an herbivore, grazing continuously in the wild on marine algae, filamentous seaweed, and associated plant matter, with small amounts of detritus and incidental meaty foods; in captivity, it is beneficial to make marine algae the bulk of the diet, especially nori/seaweed sheets, spirulina-based flakes, algae pellets, and other high-quality herbivore formulas. To ensure balanced nutrition, supplement regularly with modest portions of mysis shrimp, enriched brine shrimp, chopped clam, and other finely prepared seafoods as occasional treats rather than staples. Offer seaweed on a clip or feeding station to encourage natural foraging, and provide small feedings multiple times daily instead of one large meal. It is important to avoid overfeeding, as this can compromise water quality and reduce grazing behavior.

algae/nori spirulina mysis brine shrimp

Behavior Temperament, activity level, and interactions.

Temperament: Semi-aggressive

Bariene Tangs are highly active, nonstop swimmers that need a long, open aquarium with plenty of room to cruise and retreat into rockwork when stressed. They are generally semi-aggressive and territorial, with conspecifics often sparring unless introduced together in a very spacious system. A minimum tank size of 180 gallons is recommended, though larger systems are strongly preferred, and a layout with visual barriers and structured live rock helps reduce aggression and establish calmer territories. In reef systems they are usually reef-safe and can coexist well with many other fish, but best kept with robust, similarly sized tank mates rather than passive species or other tangs in cramped quarters. Their diet is primarily herbivorous, centered on filamentous algae and marine vegetable matter, though they also benefit from supplemental meaty foods and prepared herbivore blends. Frequent feedings of nori, algae-based pellets, and frozen fare support both health and grazing behavior.

Tank & Aquascape Tank requirements and aquascaping tips.

Min Tank Size: 250 gallons
Max Size: 20 inches
Care Level: Moderate
Origin: Indo-Pacific

Compatibility Tank mates, aggression, and introduction order.

Temperament: Semi-aggressive
Reef Safe: Yes

Reef & Health Reef safety, common issues, and prevention.

Reef Safe: Yes
Care Level: Moderate

FAQs Answers to the most common questions.

How can I tell a Bariene Tang (Acanthurus bariene) apart from a Naso tang or other brown surgeonfish at the store?

The Bariene Tang has a more streamlined, oval surgeonfish body with a long continuous dorsal and anal fin, a distinctly yellowish-brown to olive-brown coloration, and a pale ring around the eye on many individuals. Unlike Naso tangs, it does not develop the prominent horn or elongated streamers, and it has a more “flat-sided” surgeonfish profile. Juveniles are often more subdued and can be confused with other brown Acanthurus species, so look for the overall body shape and the sharp caudal scalpel near the tail base, which is typical of surgeonfish.

What tank size and layout does a Bariene Tang really need long term?

This is a large, active open-water grazer that should be kept in a very large system, ideally 8 feet long or more, with 180 gallons minimum and larger being much better. It needs long swimming lanes, strong circulation, and plenty of open space rather than a rock-choked aquascape. Rockwork should be arranged to create caves and turning points, not fill the tank. Because it is constantly on the move and can become stressed in cramped quarters, undersizing is one of the biggest reasons Bariene Tangs fail in captivity.

Will a Bariene Tang eat enough algae in a reef tank to help control nuisance growth?

It will graze constantly, but it should not be thought of as a true nuisance-algae solution. Bariene Tangs primarily browse on microalgae, film algae, and some detrital material on rock and hard surfaces. They may pick at certain nuisance algae, but they are not reliable for eradicating hair algae or tougher macroalgae outbreaks. In captivity, they still need regular feedings of marine algae-based foods, nori, and a varied herbivorous omnivore diet to stay healthy and maintain color.

Is a Bariene Tang aggressive toward other tangs, especially similar body-shaped species?

Yes, it can be quite territorial, especially toward other surgeonfish with similar body shape, color, or grazing behavior. It is usually best introduced last in a community and kept with ample space and multiple feeding stations. Aggression rises sharply in smaller tanks or when added with other Acanthurus species. In a large system, mixing with dissimilar tankmates is easier, but caution is still needed because tang-to-tang disputes can become severe and persistent.

What are the most common health problems in Bariene Tangs, and how do I prevent them?

The biggest issues are stress-related immune suppression, marine ich, skin flukes, and head/lateral line erosion if nutrition or water quality is poor. They often arrive thin and stressed from collection and shipping, so quarantine is strongly recommended. Feed a varied diet rich in marine algae, maintain excellent oxygenation, stable salinity, and pristine water quality, and avoid overcrowding. Because they are sensitive to stress and poor handling, prevention is far more important than treatment once symptoms appear.

Goes well with:

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