{"product_id":"nymph-goldfish-carassius-auratus","title":"Nymph Goldfish | Carassius auratus","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eThe Nymph Goldfish is a single-tailed fancy goldfish, sharing the egg-shaped body of the fantail but finished with a single tail and anal fin. Hardy, sociable and a strong swimmer, it grows to a substantial 15–20 cm and is a handsome, long-lived coldwater fish. Its size and waste output mean it needs a generous, well-filtered aquarium or pond.\u003c\/p\u003e\n\u003ch2\u003eNatural Habitat\u003c\/h2\u003e\n\u003cp\u003eAll goldfish are domesticated descendants of wild East Asian carp (Carassius), selectively bred over centuries. They are not found in the wild in this form, but their carp ancestry means they thrive in cool, well-oxygenated, hard water and are equally at home in a pond.\u003c\/p\u003e\n\u003ch2\u003eAppearance\u003c\/h2\u003e\n\u003cp\u003eThe Nymph has a rounded, egg-shaped body like a fantail but keeps a single caudal fin rather than a divided double tail. It typically shows the classic metallic orange of the goldfish, though other colours occur. Adults reach around 15–20 cm including the tail, and can grow larger in a pond.\u003c\/p\u003e\n\u003ch2\u003eTemperament and Compatibility\u003c\/h2\u003e\n\u003cp\u003ePeaceful, gregarious and best kept in groups. Being a single-tailed, egg-bodied fish it swims better than the fancier double-tailed types, so it is more of a match for other robust fancy goldfish. It should always be kept in coldwater company.\u003c\/p\u003e\n\u003ch2\u003eFeeding\u003c\/h2\u003e\n\u003cp\u003eAn omnivore. Feed a quality goldfish pellet or gel food as the staple, supplemented with blanched vegetables such as peas, spinach and zucchini, plus occasional frozen foods. Avoid overfeeding, as goldfish are prone to digestive and swim-bladder trouble.\u003c\/p\u003e\n\u003ch2\u003eCare Requirements\u003c\/h2\u003e\n\u003cp\u003eProvide a large, well-filtered coldwater tank or pond with cool, hard, neutral-to-alkaline water. Goldfish are messy and heavily stocked tanks foul quickly, so strong filtration and regular water changes are essential. Allow at least 75 litres for the first fish and roughly 40–50 litres for each additional goldfish. They do not need a heater.\u003c\/p\u003e\n\u003ch2\u003eBreeding\u003c\/h2\u003e\n\u003cp\u003eGoldfish are egg-scatterers that spawn in spring as the water warms, depositing sticky eggs over plants and spawning mops. The adults readily eat their own eggs, so plants or mops and prompt separation are needed to raise fry. Breeding is straightforward in a pond with seasonal temperature change.\u003c\/p\u003e\n\u003ch2\u003eSpecies Information\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eScientific Name\u003c\/td\u003e\n\u003ctd\u003eCarassius auratus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommon Name\u003c\/td\u003e\n\u003ctd\u003eNymph Goldfish (single-tailed fancy goldfish)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eDomesticated (from East Asian Carassius carp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Size\u003c\/td\u003e\n\u003ctd\u003eAround 15–20 cm (larger in ponds)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLifespan\u003c\/td\u003e\n\u003ctd\u003e10–15 years or more\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperament\u003c\/td\u003e\n\u003ctd\u003ePeaceful and sociable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDifficulty\u003c\/td\u003e\n\u003ctd\u003eBeginner\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Tank Size\u003c\/td\u003e\n\u003ctd\u003e75 litres for one fish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Tank Size\u003c\/td\u003e\n\u003ctd\u003eAdd roughly 40–50 litres per additional fish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiet\u003c\/td\u003e\n\u003ctd\u003eOmnivore – goldfish pellets, vegetables, occasional frozen foods\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Temperature\u003c\/td\u003e\n\u003ctd\u003e18–24 °C (coldwater)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Range\u003c\/td\u003e\n\u003ctd\u003e6.5–8.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGH Range\u003c\/td\u003e\n\u003ctd\u003e5–19 dGH (moderately hard to hard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSalinity\u003c\/td\u003e\n\u003ctd\u003eNot applicable (freshwater)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuitable For\u003c\/td\u003e\n\u003ctd\u003eColdwater aquariums and ponds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReef Safe\u003c\/td\u003e\n\u003ctd\u003eNot applicable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlant Safe\u003c\/td\u003e\n\u003ctd\u003eNo – goldfish nibble and uproot soft plants\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eSuitable Tank Mates\u003c\/h2\u003e\n\u003cp\u003eOther goldfish, particularly robust single-tailed and fancy varieties, and other peaceful coldwater fish such as white cloud mountain minnows in a pond or large tank.\u003c\/p\u003e\n\u003ch2\u003eAvoid Keeping With\u003c\/h2\u003e\n\u003cp\u003eTropical fish needing heat, small fish that may be eaten, and fin-nipping species. Delicate fancy goldfish with poor eyesight or slow swimming may struggle to compete with the faster Nymph.\u003c\/p\u003e","brand":"Nick's Aquarium Oceanarium Terrarium","offers":[{"title":"Small (1-5cm)","offer_id":55232822903075,"sku":"AA2549","price":10.95,"currency_code":"AUD","in_stock":false},{"title":"Medium (5-10cm)","offer_id":55232822935843,"sku":"AA2549-M","price":15.95,"currency_code":"AUD","in_stock":false},{"title":"Large (10-15cm)","offer_id":55232822968611,"sku":"AA2549-L","price":20.95,"currency_code":"AUD","in_stock":false},{"title":"X-Large (15-20cm)","offer_id":55351969710371,"sku":"AA2549-XL","price":25.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/nymph-goldfish-carassius-aur-43091450396963.webp?v=1790306577","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/nymph-goldfish-carassius-auratus","provider":"Nicks AOT","version":"1.0","type":"link"}