{"product_id":"shubunkin-goldfish-carassius-auratus-freshwater","title":"Shubunkin Goldfish (Carassius auratus)","description":"\u003cdiv style=\"background:#E3F2FD;border-left:4px solid #1E88E5;padding:10px 14px;margin:0 0 14px;font-size:0.95em;\"\u003e\n\u003cstrong\u003eIn-store pickup only.\u003c\/strong\u003e Pick up at \u003cstrong\u003e1885 Braselton Hwy, Suite D, Lawrenceville, GA\u003c\/strong\u003e.\u003cbr\u003e\nYour order is reserved — we hold off on bagging until you arrive, so it stays healthy in its display tank.\n\u003c\/div\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eShubunkin Goldfish\u003c\/strong\u003e (\u003cem\u003eCarassius auratus\u003c\/em\u003e) is the classic calico goldfish — a single-tail variety with translucent scales over a vibrant patchwork of orange, red, blue, black, and white. Beginner-friendly, peaceful, and incredibly long-lived, Shubunkins are equally at home in a large indoor aquarium or a backyard pond. These are 2–3\" juveniles that will grow rapidly with proper care.\u003c\/p\u003e\n\n\u003cp\u003eBrowse more \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/fish\"\u003efreshwater fish\u003c\/a\u003e or shop our full \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/fresh-water\"\u003efreshwater collection\u003c\/a\u003e at Squeaky's Aquatics.\u003c\/p\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #1E88E5;padding-left:8px;\"\u003eCare Guide\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank size:\u003c\/strong\u003e 30 gallons minimum for a single juvenile; 55+ gallons long-term, or a pond. Shubunkins are messy, fast-growing, and need space to swim.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater parameters:\u003c\/strong\u003e 65–72°F (coldwater — no heater needed in most homes), pH 6.5–8.0, GH 5–19. Tolerates a wide range as long as the water is clean.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiltration:\u003c\/strong\u003e Over-filter. Goldfish produce a heavy bioload, so target 6–10× tank turnover per hour with strong mechanical and biological filtration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e Sand or smooth-rounded gravel large enough that fish can't swallow it. Shubunkins love to sift the substrate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiet:\u003c\/strong\u003e Omnivore. Feed a high-quality sinking goldfish pellet as the staple, supplemented with blanched veggies (zucchini, peas, spinach) and the occasional bloodworm or daphnia.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater changes:\u003c\/strong\u003e 25–30% weekly. Goldfish are nitrate-sensitive — keep nitrates under 40 ppm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifespan:\u003c\/strong\u003e 10–20+ years with good care. They commonly outlive cats and dogs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #1E88E5;padding-left:8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;font-size:0.95em;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;width:40%;\"\u003e\u003cstrong\u003eCommon Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003eShubunkin Goldfish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e\u003cstrong\u003eScientific Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e\u003cem\u003eCarassius auratus\u003c\/em\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e\u003cstrong\u003eSize at Pickup\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e2–3 inches (juvenile)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e\u003cstrong\u003eMax Adult Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e8–14 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e\u003cstrong\u003eCare Level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003eBeginner\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e\u003cstrong\u003eTemperament\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003ePeaceful\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e\u003cstrong\u003eDiet\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003eOmnivore\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e\u003cstrong\u003eMinimum Tank Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e30 gallons (single juvenile)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e\u003cstrong\u003eTemperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e65–72°F (coldwater)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e\u003cstrong\u003eLifespan\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e10–20+ years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003e\u003cstrong\u003ePond Safe\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003eYes — excellent pond fish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #1E88E5;padding-left:8px;\"\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGood tankmates:\u003c\/strong\u003e Other single-tail goldfish (common, comet, sarasa), \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/koi-premium-3-4\"\u003ekoi\u003c\/a\u003e in a pond setting, white cloud minnows in cooler tanks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvoid:\u003c\/strong\u003e Tropical community fish (water-temperature mismatch), fancy goldfish (Shubunkins outcompete slower fancies at feeding time), aggressive or fin-nipping species, and small inverts like cherry shrimp (which will be eaten).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlants:\u003c\/strong\u003e Goldfish will graze on most aquatic plants. Stick with hardy options like \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/hornwort-ceratophyllum-demersum-freshwater-plant\"\u003eHornwort\u003c\/a\u003e, Anubias attached to driftwood, or Java fern — and accept some nibbling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #1E88E5;padding-left:8px;\"\u003eRecommended Foods \u0026amp; Supplies\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/api-goldfish-pellets-premium-complete-nutrition-fish-food-for-healthy-growth-color\"\u003eAPI Goldfish Pellets\u003c\/a\u003e — complete daily staple food.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/hornwort-ceratophyllum-demersum-freshwater-plant\"\u003eHornwort\u003c\/a\u003e — fast-growing, goldfish-tough plant that doubles as a snack.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/maintenance-water-care\"\u003eWater care \u0026amp; conditioners\u003c\/a\u003e — clean water is everything with goldfish.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/filter-media-cartridges\"\u003eFilter media\u003c\/a\u003e — heavy bioload means heavy filtration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #1E88E5;padding-left:8px;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCan I keep one in a 10-gallon tank?\u003c\/strong\u003e\u003cbr\u003e\nNot long-term. Shubunkins grow fast and big. A 10-gallon is fine as a temporary grow-out, but plan to upgrade to a 30+ gallon (or pond) within the first year.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill the colors change as it grows?\u003c\/strong\u003e\u003cbr\u003e\nYes — calico patterns shift considerably as Shubunkins mature. Juveniles often deepen and develop more blue and black over their first 1–2 years.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre they pond fish or aquarium fish?\u003c\/strong\u003e\u003cbr\u003e\nBoth. Shubunkins are one of the best beginner pond fish in mild climates and thrive in large indoor aquariums year-round.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat size will I receive?\u003c\/strong\u003e\u003cbr\u003e\nApproximately 2–3 inches at pickup. Each fish is unique — patterns and exact size will vary.\u003c\/p\u003e","brand":"Squeaky's Aquatics","offers":[{"title":"Default Title","offer_id":48541136486619,"sku":"8310377","price":6.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_5e0ac428-8b13-4d88-a96a-30628174595a.jpg?v=1775046256","url":"https:\/\/squeakysaquatics.com\/products\/shubunkin-goldfish-carassius-auratus-freshwater","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}