Collected from the remote waters of Tahiti and French Polynesia, Ctenochaetus flavicauda, commonly known as the Whitetail Bristletooth Tang, is a refined and highly sought-after surgeonfish prized for its understated elegance and geographic exclusivity. Unlike more aggressively patterned tangs, this species commands attention through contrast and restraint—a velvety charcoal body set against a crisp, luminous white tail that creates a clean, unmistakably sophisticated silhouette in motion.
Its rarity is amplified not only by limited export availability from remote Polynesian collection zones, but also by the difficulty of acquiring large, well-conditioned specimens in premium condition. Under reef lighting, subtle iridescent blue and silver undertones emerge across the body, giving the fish a constantly shifting depth that becomes more apparent over time in mature systems.
What elevates the Whitetail Bristletooth beyond standard utility tangs is its balance of function and refinement. It retains the constant grazing behavior and algae-management benefits associated with Ctenochaetus species while presenting with the visual composure and exclusivity expected of a collector-grade fish.
Premium specimens are defined by deep body coloration, sharply contrasting caudal whiteness, uninterrupted finnage, and strong feeding response. Larger Tahitian individuals in fully acclimated condition are particularly desirable and rarely encountered consistently within the trade.
Collector’s Note: True Tahitian Ctenochaetus flavicauda specimens are highly regarded among collector circles due to their limited availability, elegant monochromatic contrast, and polished appearance in mature reef systems. Well-conditioned specimens with strong contrast and flawless finnage are considered elite additions to high-end tang collections.
Lighting: Moderate to high; coloration and subtle iridescence intensify under strong reef lighting Flow: Moderate to high; thrives in well-oxygenated environments with stable water movement Placement: Active swimmer occupying mid to lower water column with access to rockwork for continuous grazing Temperature: 75–80°F (24–27°C) Salinity: 1.0265 SG (35 PPT) pH: 8.1–8.4 Alkalinity: 8–10 dKH Diet: Herbivorous/detritivorous; requires a diet rich in marine algae, biofilm, nori, and high-quality herbivore foods Aggression: Peaceful to semi-aggressive; generally less aggressive than larger Acanthurus tangs Adult Size: Up to 15 cm Care Level: Easy to Intermediate – hardy and highly adaptable once established Compatibility: Reef-safe; excellent for mature reef systems with ample grazing surfaces and compatible tank mates
