Aquarium RequirementsMinimum Tank Size: 350 litres (90 US gallons) or larger — 475 L+ recommended for pairs or haremsTemperature: 23–27 °C (74–81 °F)pH: 8.1–8.4Specific Gravity (Salinity): 1.020–1.025Alkalinity: 8–12 dKHAmmonia & Nitrite: 0 ppmNitrate:< 20 ppm (preferably < 10 ppm)Aquascape: Provide a spacious aquarium with a mix of open swimming areas and rock structures for retreat. Although Bellus Angelfish spend much of their time in the water column, they appreciate shaded areas and overhangs that replicate their natural deep-reef habitat.Maintain strong, laminar water movement and excellent oxygenation. Dimming the lighting or providing subdued zones will help mimic natural depth conditions and reduce stress.Diet and FeedingThe Bellus Angelfish is a planktivorous omnivore, feeding primarily on zooplankton, copepods, and suspended matter in the water column. In captivity, it readily adapts to prepared foods if offered a varied, nutrient-rich diet.Recommended Foods: Enriched mysis shrimp and brine shrimp Finely chopped marine seafood (clam, shrimp, scallop) High-quality frozen or dry plankton substitutes Spirulina- and algae-based flakes or micro-pellets Frozen reef blends for planktivorous fish Feed two to three times daily in small portions, ensuring food is carried through the water column where the fish naturally feed. Frequent feeding promotes natural activity and sustains vibrant coloration.Temperament and CompatibilityThe Bellus Angelfish is peaceful and social, making it one of the most community-friendly members of the angelfish family. It thrives either singly, in mated pairs, or in small harems (one male with multiple females) when space allows.Suitable Tankmates: Peaceful reef fish such as anthias, fairy wrasses (Cirrhilabrus), flasher wrasses (Paracheilinus), gobies, and chromis Other peaceful angelfish species from the Genicanthus genus (in larger systems) Non-aggressive tangs and butterflyfish Avoid: Aggressive or territorial species (large triggers, aggressive angels, or predatory wrasses) Fin-nippers and boisterous fish that may outcompete for food The Bellus Angelfish rarely shows aggression except in cases of territorial pairing disputes. If introducing multiple specimens, add them simultaneously or introduce females before males to minimize conflict.Reef Compatibility✅ Reef SafeUnlike most angelfish, members of the Genicanthus genus are obligate planktivores and do not nip at corals, clams, or sessile invertebrates. The Bellus Angelfish is therefore considered completely reef safe, making it ideal for coral-dominated reef aquariums.It provides natural motion and contrast within the upper water column without posing any risk to delicate reef organisms.Additional InformationMaximum Size: Up to 18 cm (7 inches)Lifespan: 10–12 years in captivity with optimal careDifficulty Level: Moderate — best kept by intermediate to advanced aquaristsNatural Behavior: Active midwater swimmer; social; typically found in pairs or harems; enjoys strong current and open spaceOrigin: Western & Central Pacific — from the Philippines and Indonesia to Palau, Micronesia, and the Coral SeaSexual Dimorphism: Male: Bold black and orange striping across a silvery body Female: Grey-silver body with orange-edged dorsal and caudal fins In captivity, females can change sex to male if dominant in a group — a natural process among Genicanthus species. SummaryThe Bellus Angelfish (Genicanthus bellus) is an elegant, reef-safe species admired for its peaceful disposition, graceful swimming, and striking sexual dimorphism. Perfect for advanced community or reef aquariums, it thrives in large, open-water systems with strong currents, excellent water quality, and frequent, varied feeding.With proper care, the Bellus Angelfish will display its full beauty and active social behavior, serving as a dynamic and harmonious addition to the upper layers of a mature marine aquarium.
