Description
Ctenochaetus marginatus, commonly known as the Yellow Kole Eye Tang, is a sleek and functional bristletooth tang valued for its subtle coloration and constant grazing behavior. This species typically displays a soft grey to olive body accented with fine horizontal striping and a distinct yellow ring around the eye, giving it a clean and refined appearance. Its understated look is complemented by its active nature and utility in maintaining algae control within reef systems.
Native to the Indo-Pacific, the Yellow Kole Eye Tang inhabits reef slopes and lagoons where it continuously grazes on detritus and microalgae, making it a beneficial addition to established aquariums.
Lighting: Moderate; adapts well to standard reef lighting
Flow: Moderate to high; thrives in well-oxygenated environments with steady water movement
Placement: Active swimmer occupying mid to lower water column with access to rockwork for 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 algae, biofilm, and high-quality herbivore foods, supplemented with frozen preparations
Aggression: Semi-aggressive; generally less aggressive than larger tang species but may show territorial behavior toward similar fish
Adult Size: Up to 18 cm
Care Level: Easy to Intermediate – hardy and well-suited for most established reef aquariums
Compatibility: Reef-safe; compatible with most community fish when provided adequate space and grazing surfaces
