| Scientific Name | Centropyge nox |
| Common Names | Midnight Angelfish, Black Nox Angelfish |
| Max Length | 4 inches (10 cm) |
| Min Tank Size | 55 gallons (208 liters) for a single fish; 75 gallons (284 liters) or larger if keeping multiples. Their territorial nature requires space and hiding spots. |
| Temperament | Semi-aggressive, especially territorial toward their own kind or other dwarf angelfish. Best kept singly or in pairs if introduced together. Pair with peaceful tankmates like gobies or wrasses to avoid conflicts. |
| Reef Safe | ⚠ With Caution |
The Midnight Angelfish is a sleek addition to marine tanks, prized for its deep coloration. Its body is a uniform black with subtle blue highlights on the fins and face, creating a mysterious look. Native to the western Pacific Ocean, including areas around Indonesia and the Philippines, they thrive in tanks with plenty of live rock for cover and algae for grazing. Their shy yet curious nature makes them a rewarding choice for aquarists who provide a mature, stable environment.
Omnivorous, feeding on algae, sponges, and small invertebrates in the wild. In aquariums, offer algae-based flakes or pellets with spirulina, supplemented with frozen mysis shrimp or brine shrimp. Feed small amounts 2-3 times daily. An algae-grown tank supports their natural grazing.
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