{"product_id":"white-margin-unicorn","title":"White Margin Unicorn | Naso brevirostris","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\u003cp\u003eThe White Margin Unicorn (Naso brevirostris) is a large, impressive unicornfish that develops a prominent forehead horn as it matures. Active and constantly on the move, it is a showpiece for very large reef and fish-only systems. This is a genuinely big fish, reaching up to around 60 cm, so it is only suitable for aquarists with the space and filtration to match. It is generally peaceful but needs a great deal of swimming room.\u003c\/p\u003e\u003ch2\u003eNatural Habitat\u003c\/h2\u003e\u003cp\u003eNaso brevirostris is widespread across the Indo-Pacific, found along outer reef slopes and in open water where it grazes and picks plankton. Juveniles feed mainly on benthic algae over the reef, while adults shift towards feeding on drifting zooplankton in the water column. Replicating this means a very large aquarium with strong flow, open swimming lanes and stable, well-oxygenated water.\u003c\/p\u003e\u003ch2\u003eAppearance\u003c\/h2\u003e\u003cp\u003eJuveniles are relatively plain and lack the horn, while adults develop the characteristic long, forward-projecting rostral horn and a more elongate body, often olive to grey-brown with fine markings and a paler tail margin. Two fixed bony keels sit at the tail base rather than folding spines. The considerable adult size of up to 60 cm should be understood before purchase. Healthy fish are alert, full-bodied and graze or pick constantly.\u003c\/p\u003e\u003ch2\u003eTemperament and Compatibility\u003c\/h2\u003e\u003cp\u003eTemperament is generally peaceful towards unrelated fish, but it can be aggressive towards other Naso and similar tangs, especially in confined space. It suits a large community of robust fish. Because of its adult size and swimming demands, compatibility is far more about tank volume than aggression.\u003c\/p\u003e\u003ch2\u003eFeeding\u003c\/h2\u003e\u003cp\u003eOffer a herbivore-based diet of dried marine algae (nori) and algae pellets, supplemented increasingly with meaty foods such as mysis and enriched brine as the fish matures and shifts towards zooplankton feeding. Frequent daily feeds suit its high activity level and keep it well conditioned.\u003c\/p\u003e\u003ch2\u003eCare Requirements\u003c\/h2\u003e\u003cp\u003eProvide a very large aquarium; a minimum of 2000 L is realistic for the adult size, with larger strongly preferred. Maintain temperature at 24–27°C, pH 8.1–8.4 and salinity around 1.020–1.026. Strong flow, powerful filtration, efficient skimming and excellent oxygenation are essential given the fish's size and appetite. Provide open swimming space and mature live rock. Stable conditions help guard against marine ich, to which tangs are prone.\u003c\/p\u003e\u003ch2\u003eBreeding\u003c\/h2\u003e\u003cp\u003eBreeding does not occur in the home aquarium. Like other surgeonfish, Naso species are broadcast spawners with pelagic larvae that require open-ocean conditions well beyond home-aquarium capability.\u003c\/p\u003e\u003ch2\u003eSpecies Information\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eScientific Name\u003c\/td\u003e\n\u003ctd\u003eNaso brevirostris\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommon Name\u003c\/td\u003e\n\u003ctd\u003eWhite Margin Unicorn (Spotted \/ Paletail Unicornfish)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eIndo-Pacific outer reef slopes and open water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Size\u003c\/td\u003e\n\u003ctd\u003eUp to 60 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\u003eGenerally peaceful; territorial to other Naso\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDifficulty\u003c\/td\u003e\n\u003ctd\u003eIntermediate (large system required)\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\u003e2500 L or larger\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiet\u003c\/td\u003e\n\u003ctd\u003eHerbivore\/omnivore; algae and nori when young, more zooplankton and meaty foods as adult\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 fish-only 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, larger wrasses, rabbitfish, groupers, clownfish and other robust species in a spacious system.\u003c\/p\u003e\u003ch2\u003eAvoid Keeping With\u003c\/h2\u003e\u003cp\u003eAvoid keeping with other Naso and similar-looking tangs unless the aquarium is extremely large, and with small, timid fish or anything that cannot cope with a big, fast-moving tank mate.\u003c\/p\u003e","brand":"Nick's Aquarium Oceanarium Terrarium","offers":[{"title":"Small (1-5cm) \/ Australian Caught","offer_id":55234142372131,"sku":"BA8383-S","price":65.0,"currency_code":"AUD","in_stock":false},{"title":"Medium (5-10cm) \/ Australian Caught","offer_id":55234142404899,"sku":"BA8383","price":75.0,"currency_code":"AUD","in_stock":false},{"title":"Large (10-15cm) \/ Australian Caught","offer_id":55234142437667,"sku":"BA8383-L","price":85.0,"currency_code":"AUD","in_stock":false},{"title":"X-Large (15-60cm) \/ Australian Caught","offer_id":55351941923107,"sku":"BA8383-XL","price":95.0,"currency_code":"AUD","in_stock":false},{"title":"Small (1-5cm) \/ Imported","offer_id":55562734928163,"sku":"BA8383-S-IMP","price":65.0,"currency_code":"AUD","in_stock":false},{"title":"Medium (5-10cm) \/ Imported","offer_id":55562734960931,"sku":"BA8383-M-IMP","price":75.0,"currency_code":"AUD","in_stock":false},{"title":"Large (10-15cm) \/ Imported","offer_id":55562734993699,"sku":"BA8383-L-IMP","price":85.0,"currency_code":"AUD","in_stock":false},{"title":"X-Large (15-60cm) \/ Imported","offer_id":55562735026467,"sku":"BA8383-XL-IMP","price":95.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/white-margin-unicorn-43090657837347.webp?v=1790306147","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/white-margin-unicorn","provider":"Nicks AOT","version":"1.0","type":"link"}