{"product_id":"cyprinus-carpio-a-koi-premium-mix","title":"Koi Carp (Cyprinus carpio) Premium Mix 25-30 cm","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eOur \u003cstrong\u003eKoi Carp (Cyprinus carpio)\u003c\/strong\u003e premium mix in the 25-30 cm size offers a superb choice for pond keepers looking for striking colour, strong body shape and reliable hardiness. Koi are ornamental varieties of the common carp, selectively bred over generations for their patterns, sheen and elegant movement. At this size they are already well-established juveniles, making them an excellent addition to a mature pond with good filtration and stable water quality.\u003c\/p\u003e\u003cp\u003eEach fish in this premium mix is chosen for quality and visual appeal, with a variety of colour forms and markings typical of ornamental koi. As a cold water pond fish, koi are best kept outdoors in spacious ponds where they can grow, thrive and display natural behaviour. With the right care, koi can become long-lived centrepieces, bringing character and movement to your garden pond for many years.\u003c\/p\u003e\u003cp\u003eWe supply healthy livestock with a \u003cstrong\u003elive arrival guarantee\u003c\/strong\u003e and \u003cstrong\u003efast UK delivery\u003c\/strong\u003e, so your new koi arrive in the best possible condition. Please note that koi are not suitable for small aquariums and require a properly filtered pond with ample swimming room.\u003c\/p\u003e\u003ch2\u003eCare at a Glance\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eCare Factor\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eScientific name\u003c\/td\u003e\n\u003ctd\u003e\u003cem\u003eCyprinus carpio\u003c\/em\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommon name\u003c\/td\u003e\n\u003ctd\u003eKoi Carp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCare level\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperament\u003c\/td\u003e\n\u003ctd\u003ePeaceful\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdult size\u003c\/td\u003e\n\u003ctd\u003e60-90 cm+ depending on genetics and pond conditions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum pond size\u003c\/td\u003e\n\u003ctd\u003e3,000 litres for a small group; larger is strongly recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature range\u003c\/td\u003e\n\u003ctd\u003e4-24°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH range\u003c\/td\u003e\n\u003ctd\u003e7.0-8.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiet\u003c\/td\u003e\n\u003ctd\u003eOmnivore; pellets, vegetables, insects, and occasional treats\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLifespan\u003c\/td\u003e\n\u003ctd\u003e20-35 years, often longer with excellent care\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTank region\u003c\/td\u003e\n\u003ctd\u003eMiddle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOrigin \u0026amp; Natural Habitat\u003c\/h2\u003e\u003cp\u003eKoi are domesticated ornamental carp derived from \u003cem\u003eCyprinus carpio\u003c\/em\u003e, a species native to parts of Europe and Asia. Their wild ancestors inhabit slow-moving rivers, lakes, floodplains and marshy waters where they feed opportunistically on plant matter, small invertebrates and detritus. Through centuries of selective breeding in Japan, koi developed into the highly prized pond fish we know today, with many distinct colour varieties and patterns.\u003c\/p\u003e\u003cp\u003eAlthough koi are domesticated, their biology still reflects that of a robust carp. They are adaptable, hardy and capable of tolerating a wide range of conditions, but they do best in clean, well-oxygenated water with plenty of space. In outdoor ponds, koi enjoy seasonal changes and will become more active in warmer months while slowing down during colder periods.\u003c\/p\u003e\u003ch2\u003eTank Setup \u0026amp; Water Parameters\u003c\/h2\u003e\u003cp\u003eKoi are pond fish, not aquarium fish. A proper setup should be an outdoor pond with strong filtration, good surface movement and enough depth to help maintain stable temperatures. For a group of koi, aim for a pond of at least 3,000 litres, though larger ponds are always better. Depth is important in the UK climate; a deeper pond helps fish cope with winter and reduces temperature swings in summer.\u003c\/p\u003e\u003cp\u003eWater quality is critical. Koi produce a significant bioload, so efficient mechanical and biological filtration is essential. Regular partial water changes, dechlorination and routine testing for ammonia, nitrite, nitrate and pH will help keep fish healthy. Koi prefer neutral to slightly alkaline water, and sudden changes should be avoided. Good aeration is also beneficial, especially in warm weather when oxygen levels can fall.\u003c\/p\u003e\u003cp\u003eProvide open swimming areas along with some shelter such as pond plants, marginal planting, rock features or purpose-built pond décor. Avoid overcrowding and ensure the pond is protected from predators where possible. A secure pond net or other deterrent may be useful, particularly for young fish.\u003c\/p\u003e\u003cp\u003eRecommended parameters:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature:\u003c\/strong\u003e 4-24°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH:\u003c\/strong\u003e 7.0-8.5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmmonia\/Nitrite:\u003c\/strong\u003e 0 ppm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNitrate:\u003c\/strong\u003e kept as low as practical through maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBecause these koi are 25-30 cm, they should be introduced only to an established pond with stable filtration. Acclimate slowly to reduce stress, especially in colder months or after transport.\u003c\/p\u003e\u003ch2\u003eFeeding Guide\u003c\/h2\u003e\u003cp\u003eKoi are omnivores with a broad appetite and benefit from a varied diet. A high-quality koi pellet or staple pond food should form the basis of feeding, supplemented with occasional treats such as peas, lettuce, spinach, cucumber, bloodworm, daphnia and other suitable pond-safe foods. In warmer months, koi are more active and will feed more readily; in cooler water their metabolism slows, so reduce feeding accordingly.\u003c\/p\u003e\u003cp\u003eChoose food matched to the season where possible. Wheatgerm-based foods are useful in cooler temperatures, while higher-protein foods are better for growth during the warmer months. Feed only what the fish will consume in a few minutes to avoid excess waste and water pollution. Overfeeding is one of the most common causes of poor pond water quality.\u003c\/p\u003e\u003cp\u003eYoung koi of this size can be fed once or twice daily in suitable temperatures, but always adjust based on water temperature, fish activity and pond conditions. Remove uneaten food promptly if necessary.\u003c\/p\u003e\u003ch2\u003eTank Mates \/ Compatibility\u003c\/h2\u003e\u003cp\u003eKoi are generally peaceful and can live with other pond species that share similar water requirements and temperament. Good companions include other koi, goldfish varieties that are suitable for ponds, and some larger, robust cold water fish where pond size and filtration are adequate. Compatibility depends heavily on space, water quality and the size of the fish involved.\u003c\/p\u003e\u003cp\u003eAvoid keeping koi with small fish that may be outcompeted for food, or with species that require very different temperatures or water chemistry. Koi may also uproot delicate plants and can disturb very small pond inhabitants simply through their size and feeding behaviour. As they grow, they need more room, so stocking should always be planned with adult size in mind.\u003c\/p\u003e\u003cp\u003eFor best results, keep koi in a spacious, mature pond with fish of similar size and temperament. This reduces stress and helps maintain a balanced environment.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Tropical Fish Co\u003c\/h2\u003e\u003cp\u003eAt Tropical Fish Co, we understand that buying live fish online requires confidence, care and reliable service. That is why we focus on healthy stock, careful packing and efficient dispatch. Our koi are selected for quality and condition, and we aim to make the whole process straightforward from order to delivery.\u003c\/p\u003e\u003cp\u003eWe offer \u003cstrong\u003efast UK delivery\u003c\/strong\u003e and a \u003cstrong\u003elive arrival guarantee\u003c\/strong\u003e for peace of mind, so you can order with confidence. Whether you are building a new pond or adding to an established collection, our premium koi mix provides a beautiful and hardy choice for outdoor keeping. If you are looking for ornamental fish that combine elegance, longevity and classic pond appeal, koi remain one of the very best options available.\u003c\/p\u003e\u003cp\u003eWith the right pond setup, good filtration and regular care, your koi can become a long-term feature of your garden, rewarding you with colour, personality and graceful movement throughout the seasons.\u003c\/p\u003e","brand":"Tropical Fish Co","offers":[{"title":"Default Title","offer_id":57446848364879,"sku":"CB21","price":203.39,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/1408\/6735\/files\/cyprinus-carpio-a-koi-premium-mix-natural-aquarium-cb21.webp?v=1777853284","url":"https:\/\/tropical-fish-co.myshopify.com\/products\/cyprinus-carpio-a-koi-premium-mix","provider":"Tropical Fish Co","version":"1.0","type":"link"}