Bicolor Angel

Centropyge bicolor - The bicolor angelfish is a spectacular dwarf angelfish, recognizable by its distinct yellow/blue coloration. Highly active and constantly foraging among the rocks, it adds movement and a unique reef presence to an established marine aquarium.

This species is ideal for a mature tank with plenty of live rock, hiding places, and a natural microfauna. Like many Centropyge species, it is considered reef-safe, but with caution : it may nibble on certain corals (especially LPS), zoanthids, giant clam mantles, and fleshy polyps, depending on the individual. With a good diet and in a stable tank, the risk decreases, but is never eliminated.

Adult size: Approximately 12–15 cm (5–6 in)

Difficulty level: Intermediate

Minimum recommended volume: 75 US gal and up (ideally 90+ gal) with live rock, shaded areas, and shelters

Temperament and compatibilities:

• Semi-aggressive, especially towards other dwarf angelfish and similarly shaped fish
• Best compatibility: peaceful to semi-aggressive fish (tangs, wrasses, clownfish, robust gobies)
• Avoid: adding several Centropyge to a small tank, or adding them late to a tank that is already dominated by Centropyge.

Reef compatibility (Reef Safe): With caution. Variable risk of nibbling on LPS, zoanthus, large polyp corals, giant clams.

Food :

• Omnivore with a strong tendency to graze
• Recommended: angelfish food with spirulina and seaweed, nori, mysis, enriched brine shrimp, quality pellets, sponge-based food (if available)
• Tip: Feeding in small portions 2–3 times a day helps reduce coral pecking.

Suggested water parameters:

• Temperature: 24–26 °C
• Salinity: 1.024–1.026
• pH: 8.1–8.4
• Alkalinity: 7–9 dKH
• Stable NO3 and PO4, mature tank recommended

Ecological role in the aquarium: Opportunistic grazer that participates in the control of biofilm and micro-algae on the rock, while also enlivening the decor.

Acclimation and care: Slow acclimation, dim lighting initially, plenty of hiding places. A stable and well-oxygenated tank is essential. Monitor appetite during the first few days and quickly offer several types of food.