Gold Rimmed Tang / Whitecheek Tang (Acanthurus nigricans)

Gold Rimmed Tang / Whitecheek Tang (Acanthurus nigricans)

The Gold Rimmed Tang, also known as the Whitecheek Tang, is a striking and active saltwater fish prized for its bold coloration and algae-grazing abilities. Not to be confused with the Powder Brown Tang (Acanthurus japonicus), this species is unique for its distinct gold-rimmed body and sharp white markings. Perfect for experienced aquarists, the Gold Rimmed Tang brings both beauty and functionality to large marine aquariums.

Appearance: The Gold Rimmed Tang showcases a deep, velvety black-brown body highlighted by a vibrant gold rim along the dorsal and ventral edges. A bold white patch beneath the eye contrasts sharply against the dark body, giving the fish its "Whitecheek" nickname. The pectoral fins are tipped with yellow, and the tail fin features a white margin. This dramatic coloration, paired with its streamlined body, makes the Gold Rimmed Tang a visually stunning addition to any tank.

Behavior: The Gold Rimmed Tang is an active swimmer that thrives in open spaces and spends much of its time grazing on algae. While it is generally peaceful, this tang can be territorial and assertive, particularly toward other tangs or fish of similar shape. Providing ample space and hiding spots can help reduce aggression and ensure a harmonious tank environment.

Diet: As a herbivore, the Gold Rimmed Tang requires a diet rich in marine algae. It is an efficient algae grazer, helping to control algae growth in the tank. Supplement their diet with dried algae sheets, spirulina, and high-quality herbivore pellets. Although primarily herbivorous, they may occasionally accept frozen mysis shrimp or brine shrimp. A varied and consistent diet is essential for maintaining their health and vivid coloration.

Tank Requirements: The Gold Rimmed Tang requires a minimum tank size of 120 gallons due to its active nature and territorial tendencies. They thrive in tanks with plenty of live rock for grazing and hiding spots, along with open swimming areas. Stable water parameters and excellent filtration are essential to mimic their natural environment and keep them healthy.

Tankmates: The Gold Rimmed Tang can coexist with a variety of non-aggressive fish such as clownfish, wrasses, and gobies. However, they may show aggression toward other tangs or similarly shaped fish, especially if the tank is too small. To reduce territorial disputes, introduce all tangs simultaneously and ensure the aquarium is large enough to support multiple species. This fish can be kept with other tangs of the same genus, but only if introduced at the same time to a sufficiently large tank, typically 5 feet or longer. Ensure adequate algae and other food sources to minimize aggression.

Reef Aquarium Compatibility: The Gold Rimmed Tang is reef-safe and will not harm corals or invertebrates, making it an excellent choice for reef tanks. Their constant grazing helps control algae growth, contributing to the cleanliness and balance of the reef system. Their vibrant colors and active swimming enhance the aesthetic appeal of reef environments.

Max Size: The Gold Rimmed Tang can grow up to 8 inches (20 cm) in length, making it a medium-sized tang suitable for large, well-maintained aquariums.

Origin: This species is native to the Indo-Pacific region, including waters around the Maldives, the Philippines, and Indonesia. They are often found grazing on algae in shallow coral reefs and lagoons.

Interesting Facts:

• The Gold Rimmed Tang is easily distinguished from the Powder Brown Tang by its darker body and sharp white cheek patch.

• Their natural algae-grazing behavior helps maintain a clean and healthy aquarium environment.

• While hardy once established, they require excellent water quality and a spacious tank to thrive.

Disclaimer: Aquarium Arts cannot guarantee compatibility with your current fish or the fish you buy and cannot be held liable for fish lost due to aggression.