Description
A versatile and popular surgeonfish known for its color-changing ability. Juveniles often mimic dwarf angelfish (especially lemonpeel or herald’s angels), displaying bright yellow with blue highlights. As they mature, they transition into a rich brown (“chocolate”) body with subtle markings and a more typical tang appearance. Active grazer with a sleek, oval body.
Lighting
Moderate to strong lighting
(Helps maintain coloration and supports algae growth)
Placement (Aquarium Zone)
Mid to upper water column
Needs open swimming space and live rock for grazing
Temperature
24–27°C (75–81°F)
Salinity
1.020–1.025 SG
pH
8.1–8.4
Alkalinity
8–12 dKH
Diet
Herbivore (with occasional omnivorous intake)
Marine algae (nori, seaweed sheets)
Spirulina-based foods
Algae on live rock
Mysis shrimp or brine shrimp occasionally
Adult Size (up to)
~20–25 cm (8–10 inches)
Care Level
Intermediate
(Hardy once established but needs stable conditions and space)
Compatibility
Semi-aggressive (especially toward other tangs)
Best kept singly unless tank is large
Reef-safe (does not harm corals)
Compatible with most community reef fish
Avoid mixing with similar-shaped or same-genus tangs in smaller tanks
