{"product_id":"black-nox-dwarf-angelfish","title":"Midnight (Nox) Dwarf Angelfish","description":"\u003cp\u003eThe Midnight (Nox) Dwarf Angelfish, \u003cem\u003eCentropyge nox\u003c\/em\u003e, is a striking saltwater fish distinguished by its nearly uniform jet-black to deep charcoal coloration. Subtle blue highlights may appear around the face and fin margins under strong reef lighting, while the dark body creates a dramatic contrast against brightly colored corals and other marine fish. Its simple yet bold appearance makes it one of the most distinctive dwarf angelfish for established saltwater aquariums.\u003c\/p\u003e\n\u003cp\u003eNative to the Western Pacific, this species occurs from the Ryukyu Islands and Indonesia through the Solomon Islands, Great Barrier Reef, New Caledonia, Palau, and portions of Micronesia. It naturally inhabits coral-rich outer reef slopes, lagoons, and passages where abundant rockwork and invertebrate growth provide shelter and grazing opportunities. With an adult size of approximately 4 inches, the Nox Angelfish combines manageable dimensions with the active, inquisitive behavior typical of \u003cem\u003eCentropyge\u003c\/em\u003e angelfish, making it well suited to mature fish-only aquariums and carefully planned reef aquariums.\u003c\/p\u003e\n\u003ch2\u003eQuick Care Guide\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCare Level:\u003c\/strong\u003e Moderate\u003cbr\u003e\u003cstrong\u003eMinimum Tank Size:\u003c\/strong\u003e 70 gallons\u003cbr\u003e\u003cstrong\u003eTemperament:\u003c\/strong\u003e Semi-aggressive\u003cbr\u003e\u003cstrong\u003eDiet:\u003c\/strong\u003e Omnivore\u003cbr\u003e\u003cstrong\u003eReef Safe:\u003c\/strong\u003e With Caution\u003cbr\u003e\u003cstrong\u003eRegion:\u003c\/strong\u003e Western Pacific\u003cbr\u003e\u003cstrong\u003eScientific Name:\u003c\/strong\u003e \u003cem\u003eCentropyge nox\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eTank Requirements\u003c\/h2\u003e\n\u003cp\u003eThe Midnight Angelfish should be maintained in an established marine aquarium with abundant live rock, caves, overhangs, and narrow crevices. A 70-gallon or larger aquarium provides adequate territory for its adult size while allowing sufficient room to forage and establish secure hiding areas.\u003c\/p\u003e\n\u003cp\u003eComplex rockwork is especially important for this species. In addition to providing shelter, mature live rock supplies natural algae and biofilm that the fish can graze throughout the day. Leave some open swimming space between rock structures while maintaining multiple escape routes and sheltered areas.\u003c\/p\u003e\n\u003cp\u003eModerate water movement, good oxygenation, efficient filtration, and stable water quality are ideal. Newly introduced specimens may initially remain close to rockwork but typically become increasingly visible as they acclimate.\u003c\/p\u003e\n\u003ch2\u003eDiet and Feeding\u003c\/h2\u003e\n\u003cp\u003eThe Nox Angelfish naturally consumes algae and associated organic material from reef surfaces. In captivity, it should receive a varied omnivorous diet with a strong vegetable component.\u003c\/p\u003e\n\u003cp\u003eOffer spirulina-based flakes or pellets, marine algae, high-quality angelfish preparations, mysis shrimp, enriched brine shrimp, and balanced frozen marine blends. Mature live rock provides additional grazing opportunities and is particularly beneficial between prepared feedings.\u003c\/p\u003e\n\u003cp\u003eFeed two or more small meals daily while allowing the fish to forage naturally throughout the aquarium. A varied diet helps maintain good body condition and supports normal grazing behavior.\u003c\/p\u003e\n\u003ch2\u003eTemperament and Tankmates\u003c\/h2\u003e\n\u003cp\u003eThe Midnight Angelfish is semi-aggressive and can become territorial after establishing itself in the aquarium. Aggression is most commonly directed toward other dwarf angelfish and similarly shaped fish competing for the same rockwork and feeding areas.\u003c\/p\u003e\n\u003cp\u003eIt can coexist with many appropriately sized marine community fish, including clownfish, wrasses, gobies, blennies, cardinalfish, chromis, and larger peaceful to semi-aggressive species.\u003c\/p\u003e\n\u003cp\u003eFor most home aquariums, keeping a single Nox Angelfish is the simplest approach. Housing multiple dwarf angelfish requires a considerably larger aquarium, extensive rockwork, and careful species selection.\u003c\/p\u003e\n\u003ch2\u003eReef Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe Midnight Angelfish is best considered \u003cstrong\u003ereef safe with caution\u003c\/strong\u003e. Like other dwarf angelfish, individual specimens may nip at sessile invertebrates even when otherwise well fed.\u003c\/p\u003e\n\u003cp\u003ePotential targets include soft coral polyps, zoanthids, fleshy large-polyp stony corals, and clam mantles. Some individuals coexist successfully in reef aquariums for extended periods, while others develop persistent picking behavior.\u003c\/p\u003e\n\u003cp\u003eOrnamental shrimp, snails, crabs, and other mobile reef invertebrates are generally at lower risk. Providing abundant mature rockwork and a varied diet may help redirect natural grazing behavior, but complete coral safety cannot be guaranteed.\u003c\/p\u003e\n\u003ch2\u003eWater Parameters\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e 75–80°F\u003cbr\u003e\u003cstrong\u003eSpecific Gravity:\u003c\/strong\u003e 1.024–1.026\u003cbr\u003e\u003cstrong\u003epH:\u003c\/strong\u003e 8.1–8.4\u003cbr\u003e\u003cstrong\u003eAlkalinity:\u003c\/strong\u003e 8–12 dKH\u003c\/p\u003e\n\u003cp\u003eStable conditions are more important than repeatedly adjusting the aquarium to achieve an exact number. Maintain consistent temperature and salinity along with good oxygenation, efficient filtration, and regular aquarium maintenance.\u003c\/p\u003e\n\u003ch2\u003eCommon Considerations\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eReef safe with caution:\u003c\/strong\u003e Individual fish may nip soft corals, zoanthids, fleshy stony corals, and clam mantles.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTerritorial behavior:\u003c\/strong\u003e Established specimens can become assertive toward other dwarf angelfish and similarly shaped competitors.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMature rockwork recommended:\u003c\/strong\u003e Live rock provides both secure hiding places and important natural grazing surfaces.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNaturally cryptic behavior:\u003c\/strong\u003e Newly introduced specimens may spend considerable time within rockwork before becoming comfortable in open areas.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSingle-specimen housing:\u003c\/strong\u003e Keeping one dwarf angelfish is generally the most predictable approach unless the aquarium is large enough to support multiple territories.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TSA Fish","offers":[{"title":"T","offer_id":52211791298858,"sku":"ANGELxNoxT","price":50.99,"currency_code":"USD","in_stock":false},{"title":"S","offer_id":52211791331626,"sku":"ANGELxNoxS","price":56.99,"currency_code":"USD","in_stock":false},{"title":"SM","offer_id":52211791364394,"sku":"ANGELxNoxSM","price":59.99,"currency_code":"USD","in_stock":true},{"title":"M","offer_id":52211791397162,"sku":"ANGELxNoxM","price":74.99,"currency_code":"USD","in_stock":true},{"title":"ML","offer_id":52211791429930,"sku":"ANGELxNoxML","price":83.99,"currency_code":"USD","in_stock":true},{"title":"L","offer_id":52211791462698,"sku":"ANGELxNoxL","price":89.99,"currency_code":"USD","in_stock":false},{"title":"XL","offer_id":52211791495466,"sku":"ANGELxNoxX","price":98.99,"currency_code":"USD","in_stock":false},{"title":"XX","offer_id":52211791528234,"sku":"ANGELxNoxXX","price":116.99,"currency_code":"USD","in_stock":false},{"title":"SH","offer_id":52211791561002,"sku":"ANGELxNoxSH","price":134.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0873\/7322\/files\/NoxAngel_2f5e8a03-ee58-4a15-85e3-78545368301b.png?v=1787768040","url":"https:\/\/topshelfaquatics.com\/products\/black-nox-dwarf-angelfish","provider":"Top Shelf Aquatics ","version":"1.0","type":"link"}