{"product_id":"assorted-ryukin-carassius-auratus","title":"Assorted Ryukin | Carassius auratus","description":"\u003ch2\u003eDescription\u003c\/h2\u003e \u003cp\u003eA larger assorted Ryukin — deep-bodied, high-shouldered and flowing-finned. One of the hardier and more robust fancy goldfish, the Ryukin is a bold, characterful coldwater centrepiece. Reaching around 18–20 cm and living well over a decade, it makes an impressive display fish in a spacious, cool aquarium.\u003c\/p\u003e \u003ch2\u003eNatural Habitat\u003c\/h2\u003e \u003cp\u003eThe Ryukin is a domesticated form of the goldfish, Carassius auratus, and does not occur in the wild. Its wild ancestors are carp of cool, slow, weedy East Asian waters. A spacious, cool, well-filtered aquarium or pond with smooth substrate and hardy plants suits this deep-bodied fancy well.\u003c\/p\u003e \u003ch2\u003eAppearance\u003c\/h2\u003e \u003cp\u003eThe Ryukin has a short, very deep body with a distinctive high, humped shoulder behind the head, a pointed face and long, flowing double tails. This assorted group comes in red, red-and-white, calico and other colours. The characteristic high back and finnage develop and become more dramatic as the fish matures.\u003c\/p\u003e \u003ch2\u003eTemperament and Compatibility\u003c\/h2\u003e \u003cp\u003ePeaceful and sociable, and hardier and slightly faster than the most delicate fancies, though still no match for streamlined single-tails. It is best kept with other fancy goldfish of similar size and pace. Its flowing fins can be nipped by lively or aggressive tankmates, so choose gentle companions.\u003c\/p\u003e \u003ch2\u003eFeeding\u003c\/h2\u003e \u003cp\u003eAn omnivore that does well on a quality goldfish pellet or gel food, supplemented with blanched vegetables, peas and occasional frozen foods. Sinking foods help prevent the air-gulping that can cause buoyancy problems in deep-bodied fancies. Feed small amounts once or twice daily and avoid overfeeding.\u003c\/p\u003e \u003ch2\u003eCare Requirements\u003c\/h2\u003e \u003cp\u003eProvide a minimum of around 75 L for the first fish, adding roughly 40 L per additional goldfish, with strong filtration for this heavy waste producer. Keep the water cool at 18–22 °C, pH 7.0–8.0 and moderately hard water, around GH 8–20. Use smooth substrate and robust décor. It tends to nibble and uproot soft plants, so choose hardy species.\u003c\/p\u003e \u003ch2\u003eBreeding\u003c\/h2\u003e \u003cp\u003eBreeding follows the goldfish pattern: warming water in spring triggers spawning, with males chasing females that scatter sticky eggs among plants or spawning mops. Adults eat the eggs, so move the spawning medium to a separate tank, where fry hatch within a few days and grow on quickly.\u003c\/p\u003e \u003ch2\u003eSpecies Information\u003c\/h2\u003e \u003ctable\u003e \u003ctr\u003e\n\u003ctd\u003eScientific Name\u003c\/td\u003e\n\u003ctd\u003eCarassius auratus\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eCommon Name\u003c\/td\u003e\n\u003ctd\u003eRyukin Goldfish (assorted)\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eDomesticated (East Asia)\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eMaximum Size\u003c\/td\u003e\n\u003ctd\u003eAround 18–20 cm\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eLifespan\u003c\/td\u003e\n\u003ctd\u003e10–15 years or more with good care\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eTemperament\u003c\/td\u003e\n\u003ctd\u003ePeaceful (slow)\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eDifficulty\u003c\/td\u003e\n\u003ctd\u003eBeginner\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eMinimum Tank Size\u003c\/td\u003e\n\u003ctd\u003e75 L (plus ~40 L per additional fish)\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eRecommended Tank Size\u003c\/td\u003e\n\u003ctd\u003e150 L or larger for a group\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eDiet\u003c\/td\u003e\n\u003ctd\u003eOmnivore: goldfish pellets, gel food, vegetables, frozen foods\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eWater Temperature\u003c\/td\u003e\n\u003ctd\u003e18–22 °C\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003epH Range\u003c\/td\u003e\n\u003ctd\u003e7.0–8.0\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eGH Range\u003c\/td\u003e\n\u003ctd\u003eModerate to hard, around 8–20 dGH\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eSalinity\u003c\/td\u003e\n\u003ctd\u003eNot applicable (freshwater)\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eSuitable For\u003c\/td\u003e\n\u003ctd\u003eLarge, cool, well-filtered aquariums and ponds\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eReef Safe\u003c\/td\u003e\n\u003ctd\u003eNot applicable\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003ePlant Safe\u003c\/td\u003e\n\u003ctd\u003eNo (tends to nibble and uproot soft plants; use hardy species)\u003c\/td\u003e\n\u003c\/tr\u003e \u003c\/table\u003e \u003ch2\u003eSuitable Tank Mates\u003c\/h2\u003e \u003cp\u003eSuitable tank mates include other fancy goldfish such as fantails, orandas and other ryukin, chosen to match their size and gentle pace.\u003c\/p\u003e \u003ch2\u003eAvoid Keeping With\u003c\/h2\u003e \u003cp\u003eAvoid keeping with fast single-tailed goldfish, tropical species needing heat, fin-nippers, and small fish or shrimp that may be eaten. Avoid strong flow and sharp décor.\u003c\/p\u003e","brand":"Nick's Aquarium Oceanarium Terrarium","offers":[{"title":"Small (1-5cm)","offer_id":55232822411555,"sku":"AA1379","price":19.95,"currency_code":"AUD","in_stock":false},{"title":"Medium (5-10cm)","offer_id":55232822444323,"sku":"AA1379-M","price":24.95,"currency_code":"AUD","in_stock":false},{"title":"Large (10-15cm)","offer_id":55232822477091,"sku":"AA1387","price":45.0,"currency_code":"AUD","in_stock":false},{"title":"X-Large (15-20cm)","offer_id":55353178390819,"sku":"AA1379-XL","price":50.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/assorted-ryukin-carassius-au-43091449315619-lv.webp?v=1790307188","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/assorted-ryukin-carassius-auratus","provider":"Nicks AOT","version":"1.0","type":"link"}