{"product_id":"assorted-ryukin-goldfish-carassius-auratus","title":"Assorted Ryukin Goldfish Carassius Auratus","description":"\u003ch4\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe ryukin is a fancy goldfish with a deep, compressed body, a pronounced hump behind the head and long flowing double fins. This assorted selection includes red, red and white, calico and chocolate forms, some with extra-long tails. Developed in Japan from Chinese fantail stock, it is one of the hardier fancy varieties and suits keepers wanting an active, sturdy goldfish.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003eAdult Size:\u003c\/em\u003e Around 15–20 cm (6–8 in)\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eLifespan:\u003c\/em\u003e 10–15 years, often longer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003eNative to:\u003c\/em\u003e Captive-bred; ancestral form from China\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eHabitat:\u003c\/em\u003e Slow rivers, lakes and ponds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eFeeding\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003eDiet:\u003c\/em\u003e Omnivorous\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003ePreferred Foods:\u003c\/em\u003e Sinking goldfish pellets, gel food, peas, daphnia, bloodworm, blanched spinach\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eFeeding Habits:\u003c\/em\u003e Two or three small feeds daily; avoid overfeeding; include vegetables\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eTank Mates\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003eBest with:\u003c\/em\u003e Orandas, fantails, telescopes and other fancy goldfish\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eAvoid:\u003c\/em\u003e Single-tailed goldfish, fin-nippers, tropical fish\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eAggression \u0026amp; Behaviour\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003eTemperament:\u003c\/em\u003e Peaceful but boisterous at feeding\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eTerritoriality:\u003c\/em\u003e None; jostles at feeding time\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eExperience Level\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003eDifficulty:\u003c\/em\u003e Beginner\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eChallenges:\u003c\/em\u003e Heavy waste output; can bully slower fancies at feeding; needs strong filtration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eWater Parameters\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003eWater Type:\u003c\/em\u003e Freshwater, cool and neutral\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eTemperature:\u003c\/em\u003e 18–24°C (64–75°F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003epH:\u003c\/em\u003e 6.5–7.5\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eHardness:\u003c\/em\u003e 5–19 dGH\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eFlow:\u003c\/em\u003e Slow to moderate\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eTank Size:\u003c\/em\u003e Minimum 110 litres for one, adding 40 litres per extra fish\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eFinal Notes\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eRyukins are long-lived and grow fairly large for a fancy goldfish, so plan a roomy tank with strong filtration. Their deep body makes them prone to swim bladder problems if overfed or given floating food, so favour sinking pellets and vegetables. They are quick, greedy eaters, so pair with fancies that can compete. Egg scatterers; males show breeding tubercles in spring. A robust, showy choice for a first fancy goldfish.\u003c\/p\u003e","brand":"SimsTF","offers":[{"title":"5cm","offer_id":64680681931129,"sku":"STF-RYUKIN-ASS-5cm","price":8.0,"currency_code":"GBP","in_stock":true},{"title":"10cm","offer_id":64680681963897,"sku":"STF-RYUKIN-ASS-10cm","price":16.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1026\/3124\/4153\/files\/STF-RYUKIN-ASS.png?v=1790097220","url":"https:\/\/birchwoodaquatics.myshopify.com\/products\/assorted-ryukin-goldfish-carassius-auratus","provider":"Birchwood Aquatic Centre","version":"1.0","type":"link"}