{"product_id":"humpnose-unicornfish","title":"Humpnose Unicornfish | Naso tonganus","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\u003cp\u003eThe Humpnose Unicornfish is a large, impressive surgeonfish that develops a rounded bulbous forehead and grazes constantly across the reef. It brings size, movement and grazing power to a very large reef or FOWLR system. Be aware that this is a big fish — adults can reach around 60 cm — so it is a long-term commitment that needs a genuinely large aquarium and only suits experienced keepers.\u003c\/p\u003e\u003ch2\u003eNatural Habitat\u003c\/h2\u003e\u003cp\u003eThis species ranges across the Indo-Pacific on outer reef slopes and drop-offs, where it grazes on algae and drifting plankton in open water. It is an active, roaming fish that covers large distances over the reef. In the aquarium it needs a great deal of open swimming space, mature live rock with grazing surfaces, and strong, oxygen-rich water movement.\u003c\/p\u003e\u003ch2\u003eAppearance\u003c\/h2\u003e\u003cp\u003eThe body is deep and powerful, generally grey to olive, with the characteristic swollen \"humpnose\" forehead developing in adults and paired keeled scutes on the tail base. Colours can intensify or pale with mood. Adult size of around 60 cm should be firmly in mind before purchase. Healthy specimens are alert, actively grazing, with good body weight, clear eyes and no signs of the white spot to which tangs are prone.\u003c\/p\u003e\u003ch2\u003eTemperament and Compatibility\u003c\/h2\u003e\u003cp\u003eTemperament is generally peaceful toward other fish but semi-aggressive toward other tangs and unicornfish, so it is best kept singly unless the system is enormous. It mixes well with large angels, wrasses, groupers and other big, robust reef or FOWLR fish. Its scalpel-like tail spines can inflict injury, so handle with care. Give it plenty of room to avoid tension with similar species.\u003c\/p\u003e\u003ch2\u003eFeeding\u003c\/h2\u003e\u003cp\u003eThis is primarily a herbivore that also takes some meaty foods. Provide plenty of marine algae and dried nori, along with a quality herbivore or omnivore preparation, spirulina, and occasional meaty frozen foods such as mysis. Frequent grazing opportunities keep it healthy and help prevent aggression and disease. A constant supply of algae is far better than one large daily feeding.\u003c\/p\u003e\u003ch2\u003eCare Requirements\u003c\/h2\u003e\u003cp\u003eProvide a very large aquarium — a minimum of around 2000 L for this active, fast-growing fish. Maintain temperature at 24–27°C, pH 8.1–8.4 and salinity around 1.020–1.026. Strong flow, excellent oxygenation, powerful filtration and pristine water are essential. Tangs are prone to ich when stressed, so stable conditions and good nutrition are key. This species is reef safe and will not harm corals or invertebrates.\u003c\/p\u003e\u003ch2\u003eBreeding\u003c\/h2\u003e\u003cp\u003eThe Humpnose Unicornfish is not bred in home aquariums. Like other surgeonfish it is a broadcast spawner producing pelagic eggs and larvae that require open-ocean conditions and specialised culture. Captive breeding is not achievable in the hobby, so the focus should be on space, nutrition and long-term health.\u003c\/p\u003e\u003ch2\u003eSpecies Information\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eScientific Name\u003c\/td\u003e\n\u003ctd\u003eNaso tonganus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommon Name\u003c\/td\u003e\n\u003ctd\u003eHumpnose Unicornfish (Bulbnose Unicornfish, Tonganus Tang)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eIndo-Pacific outer reef slopes and drop-offs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Size\u003c\/td\u003e\n\u003ctd\u003e60 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLifespan\u003c\/td\u003e\n\u003ctd\u003e10+ years with good care\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperament\u003c\/td\u003e\n\u003ctd\u003ePeaceful (semi-aggressive to other tangs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDifficulty\u003c\/td\u003e\n\u003ctd\u003eAdvanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Tank Size\u003c\/td\u003e\n\u003ctd\u003e2000 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Tank Size\u003c\/td\u003e\n\u003ctd\u003e3000 L or larger\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiet\u003c\/td\u003e\n\u003ctd\u003eHerbivore; marine algae, nori and some meaty foods\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Temperature\u003c\/td\u003e\n\u003ctd\u003e24–27°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Range\u003c\/td\u003e\n\u003ctd\u003e8.1–8.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGH Range\u003c\/td\u003e\n\u003ctd\u003eNot applicable for marine fish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSalinity\u003c\/td\u003e\n\u003ctd\u003e1.020–1.026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuitable For\u003c\/td\u003e\n\u003ctd\u003eVery large reef and FOWLR systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReef Safe\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlant Safe\u003c\/td\u003e\n\u003ctd\u003eNot applicable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eSuitable Tank Mates\u003c\/h2\u003e\u003cp\u003eSuitable tank mates include large angelfish, wrasses, groupers, other robust reef or FOWLR fish and, in very large systems, dissimilar tangs.\u003c\/p\u003e\u003ch2\u003eAvoid Keeping With\u003c\/h2\u003e\u003cp\u003eAvoid keeping with other unicornfish or similar tangs in anything but a huge system, and any tank that cannot provide the swimming room this large fish demands.\u003c\/p\u003e","brand":"Nick's Aquarium Oceanarium Terrarium","offers":[{"title":"Small (1-5cm)","offer_id":55234142241059,"sku":null,"price":55.0,"currency_code":"AUD","in_stock":false},{"title":"Medium (5-10cm)","offer_id":55234142273827,"sku":"BA8446","price":65.0,"currency_code":"AUD","in_stock":false},{"title":"Large (10-15cm)","offer_id":55234142306595,"sku":null,"price":75.0,"currency_code":"AUD","in_stock":false},{"title":"X-Large (15-60cm)","offer_id":55351941890339,"sku":null,"price":85.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/Humpnose_Unicornfish_Naso_tonganus_2826c0c0-7370-4fa9-a28e-64305532262f.jpg?v=1781681469","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/humpnose-unicornfish","provider":"Nicks Aquarium Oceanarium Terrarium","version":"1.0","type":"link"}