{"title":"Cold Water Fish","description":"\u003cp\u003eExplore cold-water and temperate pond fish at Glass \u0026amp; Gill. Check each species’ temperature, pond size and care requirements before purchasing.\u003c\/p\u003e","products":[{"product_id":"maruhiro-metallic-chimmy-mix-tosai-koi","title":"Maruhiro Metallic Chimmy Mix Tosai Koi","description":"\u003cp\u003eMaruhiro’s metallic mixed Tosai are for pond keepers drawn to reflective skin and lively colour. “Chimmy Mix” is the supplier’s batch description, not a single recognised colour variety, so expect different patterns within the group.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSupplier code:\u003c\/strong\u003e KN26-05  |  \u003cstrong\u003eListed size:\u003c\/strong\u003e 18–23 cm\u003c\/p\u003e\u003ch3\u003eWhat to look for in this Koi\u003c\/h3\u003e\u003cp\u003eMetallic skin is the attraction here. View potential purchases in daylight and look for even sheen, intact fins and balanced body shape rather than choosing solely by the brightest colour. At this size, patterns and colour strength can develop noticeably as the fish grows.\u003c\/p\u003e\u003ch3\u003ePond requirements and day-to-day care\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSpecies:\u003c\/strong\u003e Japanese ornamental Koi (\u003cem\u003eCyprinus carpio\u003c\/em\u003e). These are social, long-lived pond fish that can exceed 60 cm, with some growing considerably larger. Keep with suitably sized Koi rather than in small indoor aquariums. Provide substantial swimming volume, strong biological and mechanical filtration, aeration, shade and protection from predators. Actual pond volume depends on adult stocking density and filtration; allow several thousand litres for a small group and plan for growth.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWater:\u003c\/strong\u003e Aim for stable, well-oxygenated water around 15–25°C, pH roughly 7.0–8.5, and zero measurable ammonia and nitrite. Koi tolerate seasonal temperature variation if changes are gradual, but heat, low oxygen and abrupt shifts are dangerous. Test water routinely and perform sensible partial water changes using dechlorinated water.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeeding:\u003c\/strong\u003e Offer a reputable Koi pellet suited to fish size and water temperature. Feed only what is eaten promptly; reduce feeding as the water cools and follow temperature-specific food guidance. Uneaten food and aggressive growth feeding increase water pollution.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIntroducing your fish:\u003c\/strong\u003e Arrange suitable live-fish transport before ordering. Have a separate observation\/quarantine system ready, compare transport and pond conditions, and acclimate carefully without adding transport water to the pond. Monitor the fish before mixing it with established stock.\u003c\/p\u003e\u003ch3\u003eChoosing and receiving your Koi\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIllustrative image:\u003c\/strong\u003e The image is AI-generated to explain the advertised type; it is not a photograph of the fish offered. Pattern, colouring, body shape, sex and exact measured length may vary. Request current photos\/video and supplier confirmation for individually priced specimens before purchase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAvailability:\u003c\/strong\u003e Supplier availability is subject to individual selection, confirmation and transport suitability. Large Koi may require specialist collection or quoted transport rather than standard livestock courier pricing.\u003c\/p\u003e","brand":"Glass \u0026 Gill","offers":[{"title":"Default Title","offer_id":54155316625702,"sku":"KN26-05","price":2295.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1019\/9810\/0774\/files\/gg-japanese-koi-10811135099174_c0eacd43-2c07-43ec-a190-cc7ed0ff595a.png?v=1792475382"},{"product_id":"marusei-gosanke-kujaku-aka-matsuba-mix-tosai-koi","title":"Marusei Gosanke Kujaku Aka Matsuba Mix Tosai Koi","description":"\u003cp\u003eThis Marusei Tosai mix brings together several traditional Japanese colour types rather than one uniform pattern. Gosanke refers to Kohaku, Sanke and Showa; Kujaku combines metallic white skin with darker reticulated scales and red\/orange pattern; Aka Matsuba typically shows a red base with pinecone-like dark scale centres.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSupplier code:\u003c\/strong\u003e KN26-10  |  \u003cstrong\u003eListed size:\u003c\/strong\u003e 18–23 cm\u003c\/p\u003e\u003ch3\u003eWhat to look for in this Koi\u003c\/h3\u003e\u003cp\u003eWhen selecting from this mixed batch, judge each fish by the standards of its actual variety. A Kujaku’s scale reticulation matters, while Kohaku quality is better assessed through clean white skin and the placement of its red pattern. Colour and pattern are not guaranteed for any particular fish in a mixed selection.\u003c\/p\u003e\u003ch3\u003ePond requirements and day-to-day care\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSpecies:\u003c\/strong\u003e Japanese ornamental Koi (\u003cem\u003eCyprinus carpio\u003c\/em\u003e). These are social, long-lived pond fish that can exceed 60 cm, with some growing considerably larger. Keep with suitably sized Koi rather than in small indoor aquariums. Provide substantial swimming volume, strong biological and mechanical filtration, aeration, shade and protection from predators. Actual pond volume depends on adult stocking density and filtration; allow several thousand litres for a small group and plan for growth.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWater:\u003c\/strong\u003e Aim for stable, well-oxygenated water around 15–25°C, pH roughly 7.0–8.5, and zero measurable ammonia and nitrite. Koi tolerate seasonal temperature variation if changes are gradual, but heat, low oxygen and abrupt shifts are dangerous. Test water routinely and perform sensible partial water changes using dechlorinated water.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeeding:\u003c\/strong\u003e Offer a reputable Koi pellet suited to fish size and water temperature. Feed only what is eaten promptly; reduce feeding as the water cools and follow temperature-specific food guidance. Uneaten food and aggressive growth feeding increase water pollution.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIntroducing your fish:\u003c\/strong\u003e Arrange suitable live-fish transport before ordering. Have a separate observation\/quarantine system ready, compare transport and pond conditions, and acclimate carefully without adding transport water to the pond. Monitor the fish before mixing it with established stock.\u003c\/p\u003e\u003ch3\u003eChoosing and receiving your Koi\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIllustrative image:\u003c\/strong\u003e The image is AI-generated to explain the advertised type; it is not a photograph of the fish offered. Pattern, colouring, body shape, sex and exact measured length may vary. Request current photos\/video and supplier confirmation for individually priced specimens before purchase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAvailability:\u003c\/strong\u003e Supplier availability is subject to individual selection, confirmation and transport suitability. Large Koi may require specialist collection or quoted transport rather than standard livestock courier pricing.\u003c\/p\u003e","brand":"Glass \u0026 Gill","offers":[{"title":"Default Title","offer_id":54155316658470,"sku":"KN26-10","price":2295.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1019\/9810\/0774\/files\/gg-japanese-koi-10811135131942_3310fd23-9096-40fd-bda0-26cd5e773a9f.png?v=1792475392"},{"product_id":"nnd-gosanke-chimmy-mix-nisai-koi","title":"NND Gosanke Chimmy Mix Nisai Koi","description":"\u003cp\u003eA Nisai offering from NND listed as a Gosanke Chimmy mix. Nisai describes a fish in its second year, while Gosanke covers Kohaku, Sanke and Showa. The supplier’s “Chimmy” label is a commercial mix name, not a formally established Koi variety.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSupplier code:\u003c\/strong\u003e KN26-15  |  \u003cstrong\u003eListed size:\u003c\/strong\u003e 20–25 cm\u003c\/p\u003e\u003ch3\u003eWhat to look for in this Koi\u003c\/h3\u003e\u003cp\u003eFor Gosanke, take the time to assess the whites, reds and any black markings in relation to body shape and skin quality. Black (sumi) can develop or shift with maturity. A 20–25 cm Nisai can still have plenty of growing to do, so leave generous pond capacity for its adult size.\u003c\/p\u003e\u003ch3\u003ePond requirements and day-to-day care\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSpecies:\u003c\/strong\u003e Japanese ornamental Koi (\u003cem\u003eCyprinus carpio\u003c\/em\u003e). These are social, long-lived pond fish that can exceed 60 cm, with some growing considerably larger. Keep with suitably sized Koi rather than in small indoor aquariums. Provide substantial swimming volume, strong biological and mechanical filtration, aeration, shade and protection from predators. Actual pond volume depends on adult stocking density and filtration; allow several thousand litres for a small group and plan for growth.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWater:\u003c\/strong\u003e Aim for stable, well-oxygenated water around 15–25°C, pH roughly 7.0–8.5, and zero measurable ammonia and nitrite. Koi tolerate seasonal temperature variation if changes are gradual, but heat, low oxygen and abrupt shifts are dangerous. Test water routinely and perform sensible partial water changes using dechlorinated water.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeeding:\u003c\/strong\u003e Offer a reputable Koi pellet suited to fish size and water temperature. Feed only what is eaten promptly; reduce feeding as the water cools and follow temperature-specific food guidance. Uneaten food and aggressive growth feeding increase water pollution.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIntroducing your fish:\u003c\/strong\u003e Arrange suitable live-fish transport before ordering. Have a separate observation\/quarantine system ready, compare transport and pond conditions, and acclimate carefully without adding transport water to the pond. Monitor the fish before mixing it with established stock.\u003c\/p\u003e\u003ch3\u003eChoosing and receiving your Koi\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIllustrative image:\u003c\/strong\u003e The image is AI-generated to explain the advertised type; it is not a photograph of the fish offered. Pattern, colouring, body shape, sex and exact measured length may vary. Request current photos\/video and supplier confirmation for individually priced specimens before purchase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAvailability:\u003c\/strong\u003e Supplier availability is subject to individual selection, confirmation and transport suitability. Large Koi may require specialist collection or quoted transport rather than standard livestock courier pricing.\u003c\/p\u003e","brand":"Glass \u0026 Gill","offers":[{"title":"Default Title","offer_id":54155316691238,"sku":"KN26-15","price":2795.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1019\/9810\/0774\/files\/gg-japanese-koi-10811135164710_6dd731b5-a243-4e16-b226-fdef68de18f1.png?v=1792475400"},{"product_id":"taniguchi-gin-rin-hajiro-female-tosai-koi","title":"Taniguchi Gin Rin Hajiro Female Tosai Koi","description":"\u003cp\u003eA Taniguchi-listed female Gin Rin Hajiro Tosai at approximately 22 cm. Hajiro generally describes a dark-bodied Koi with white edging or tips on the fins; Gin Rin refers to reflective scales that sparkle when the light catches them. The seller’s female classification comes from the supplier and should be confirmed for an individual fish if essential to your purchase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSupplier code:\u003c\/strong\u003e KN26-20  |  \u003cstrong\u003eListed size:\u003c\/strong\u003e 22 cm\u003c\/p\u003e\u003ch3\u003eWhat to look for in this Koi\u003c\/h3\u003e\u003cp\u003eThe draw is the contrast between the dark ground colour, lighter fin edges and reflective scaling. Gin Rin is best judged in natural light, where you can see whether the sparkle is reasonably consistent across the back. Keep pond water clear but do not chase clarity with excessive chemical treatments; stable, well-filtered water matters more than show-day appearance.\u003c\/p\u003e\u003ch3\u003ePond requirements and day-to-day care\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSpecies:\u003c\/strong\u003e Japanese ornamental Koi (\u003cem\u003eCyprinus carpio\u003c\/em\u003e). These are social, long-lived pond fish that can exceed 60 cm, with some growing considerably larger. Keep with suitably sized Koi rather than in small indoor aquariums. Provide substantial swimming volume, strong biological and mechanical filtration, aeration, shade and protection from predators. Actual pond volume depends on adult stocking density and filtration; allow several thousand litres for a small group and plan for growth.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWater:\u003c\/strong\u003e Aim for stable, well-oxygenated water around 15–25°C, pH roughly 7.0–8.5, and zero measurable ammonia and nitrite. Koi tolerate seasonal temperature variation if changes are gradual, but heat, low oxygen and abrupt shifts are dangerous. Test water routinely and perform sensible partial water changes using dechlorinated water.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeeding:\u003c\/strong\u003e Offer a reputable Koi pellet suited to fish size and water temperature. Feed only what is eaten promptly; reduce feeding as the water cools and follow temperature-specific food guidance. Uneaten food and aggressive growth feeding increase water pollution.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIntroducing your fish:\u003c\/strong\u003e Arrange suitable live-fish transport before ordering. Have a separate observation\/quarantine system ready, compare transport and pond conditions, and acclimate carefully without adding transport water to the pond. Monitor the fish before mixing it with established stock.\u003c\/p\u003e\u003ch3\u003eChoosing and receiving your Koi\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIllustrative image:\u003c\/strong\u003e The image is AI-generated to explain the advertised type; it is not a photograph of the fish offered. Pattern, colouring, body shape, sex and exact measured length may vary. Request current photos\/video and supplier confirmation for individually priced specimens before purchase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAvailability:\u003c\/strong\u003e Supplier availability is subject to individual selection, confirmation and transport suitability. Large Koi may require specialist collection or quoted transport rather than standard livestock courier pricing.\u003c\/p\u003e","brand":"Glass \u0026 Gill","offers":[{"title":"Default Title","offer_id":54155317051686,"sku":"KN26-20","price":14995.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1019\/9810\/0774\/files\/gg-japanese-koi-10811135328550_711633e1-7705-4a93-acf5-36d5efcd731b.png?v=1792475443"},{"product_id":"taniguchi-gin-rin-hajiro-male-tosai-koi","title":"Taniguchi Gin Rin Hajiro Male Tosai Koi","description":"\u003cp\u003eTaniguchi Gin Rin Hajiro Tosai listed as male, approximately 24 cm. Expect a dark Hajiro-style fish with pale fin tips and Gin Rin reflective scaling, although the exact distribution of dark colour, white edging and sparkle depends on the individual. The sex is based on the supplier listing, not a fresh examination by Glass \u0026amp; Gill.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSupplier code:\u003c\/strong\u003e KN26-25  |  \u003cstrong\u003eListed size:\u003c\/strong\u003e 24 cm\u003c\/p\u003e\u003ch3\u003eWhat to look for in this Koi\u003c\/h3\u003e\u003cp\u003eMale Koi can develop a more athletic silhouette than females, but age and feeding are major factors; don’t use body shape alone to certify sex. When inspecting this variety, check that the fins are intact and the bright scale effect remains visible across the back rather than relying on a heavily processed photograph.\u003c\/p\u003e\u003ch3\u003ePond requirements and day-to-day care\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSpecies:\u003c\/strong\u003e Japanese ornamental Koi (\u003cem\u003eCyprinus carpio\u003c\/em\u003e). These are social, long-lived pond fish that can exceed 60 cm, with some growing considerably larger. Keep with suitably sized Koi rather than in small indoor aquariums. Provide substantial swimming volume, strong biological and mechanical filtration, aeration, shade and protection from predators. Actual pond volume depends on adult stocking density and filtration; allow several thousand litres for a small group and plan for growth.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWater:\u003c\/strong\u003e Aim for stable, well-oxygenated water around 15–25°C, pH roughly 7.0–8.5, and zero measurable ammonia and nitrite. Koi tolerate seasonal temperature variation if changes are gradual, but heat, low oxygen and abrupt shifts are dangerous. Test water routinely and perform sensible partial water changes using dechlorinated water.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeeding:\u003c\/strong\u003e Offer a reputable Koi pellet suited to fish size and water temperature. Feed only what is eaten promptly; reduce feeding as the water cools and follow temperature-specific food guidance. Uneaten food and aggressive growth feeding increase water pollution.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIntroducing your fish:\u003c\/strong\u003e Arrange suitable live-fish transport before ordering. Have a separate observation\/quarantine system ready, compare transport and pond conditions, and acclimate carefully without adding transport water to the pond. Monitor the fish before mixing it with established stock.\u003c\/p\u003e\u003ch3\u003eChoosing and receiving your Koi\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIllustrative image:\u003c\/strong\u003e The image is AI-generated to explain the advertised type; it is not a photograph of the fish offered. Pattern, colouring, body shape, sex and exact measured length may vary. Request current photos\/video and supplier confirmation for individually priced specimens before purchase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAvailability:\u003c\/strong\u003e Supplier availability is subject to individual selection, confirmation and transport suitability. Large Koi may require specialist collection or quoted transport rather than standard livestock courier pricing.\u003c\/p\u003e","brand":"Glass \u0026 Gill","offers":[{"title":"Default Title","offer_id":54155317084454,"sku":"KN26-25","price":13995.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1019\/9810\/0774\/files\/gg-japanese-koi-10811135361318_62f2a605-8f5e-42c3-99dd-2047dd9a5329.png?v=1792475451"},{"product_id":"taniguchi-kohaku-male-jumbo-tosai-koi","title":"Taniguchi Kohaku Male Jumbo Tosai Koi","description":"\u003cp\u003eA jumbo Tosai Kohaku from Taniguchi, listed as male and measuring approximately 32 cm. Kohaku is the classic red-and-white Koi, with red (hi) markings over a white (shiroji) base and no black pattern as part of the variety. “Jumbo Tosai” refers to notably strong size for the age class, not a promise of eventual show grade.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSupplier code:\u003c\/strong\u003e KN26-30  |  \u003cstrong\u003eListed size:\u003c\/strong\u003e 32 cm\u003c\/p\u003e\u003ch3\u003eWhat to look for in this Koi\u003c\/h3\u003e\u003cp\u003eThe appeal of a Kohaku is simplicity done well: strong white skin, convincing red colour and a pattern that suits the length and frame of the fish. With a fast-growing Tosai, feed quality food appropriately for the season while keeping filtration ahead of waste production. Protect water quality rather than forcing rapid growth.\u003c\/p\u003e\u003ch3\u003ePond requirements and day-to-day care\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSpecies:\u003c\/strong\u003e Japanese ornamental Koi (\u003cem\u003eCyprinus carpio\u003c\/em\u003e). These are social, long-lived pond fish that can exceed 60 cm, with some growing considerably larger. Keep with suitably sized Koi rather than in small indoor aquariums. Provide substantial swimming volume, strong biological and mechanical filtration, aeration, shade and protection from predators. Actual pond volume depends on adult stocking density and filtration; allow several thousand litres for a small group and plan for growth.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWater:\u003c\/strong\u003e Aim for stable, well-oxygenated water around 15–25°C, pH roughly 7.0–8.5, and zero measurable ammonia and nitrite. Koi tolerate seasonal temperature variation if changes are gradual, but heat, low oxygen and abrupt shifts are dangerous. Test water routinely and perform sensible partial water changes using dechlorinated water.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeeding:\u003c\/strong\u003e Offer a reputable Koi pellet suited to fish size and water temperature. Feed only what is eaten promptly; reduce feeding as the water cools and follow temperature-specific food guidance. Uneaten food and aggressive growth feeding increase water pollution.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIntroducing your fish:\u003c\/strong\u003e Arrange suitable live-fish transport before ordering. Have a separate observation\/quarantine system ready, compare transport and pond conditions, and acclimate carefully without adding transport water to the pond. Monitor the fish before mixing it with established stock.\u003c\/p\u003e\u003ch3\u003eChoosing and receiving your Koi\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIllustrative image:\u003c\/strong\u003e The image is AI-generated to explain the advertised type; it is not a photograph of the fish offered. Pattern, colouring, body shape, sex and exact measured length may vary. Request current photos\/video and supplier confirmation for individually priced specimens before purchase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAvailability:\u003c\/strong\u003e Supplier availability is subject to individual selection, confirmation and transport suitability. Large Koi may require specialist collection or quoted transport rather than standard livestock courier pricing.\u003c\/p\u003e","brand":"Glass \u0026 Gill","offers":[{"title":"Default Title","offer_id":54155317117222,"sku":"KN26-30","price":15995.0,"currency_code":"ZAR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1019\/9810\/0774\/files\/gg-japanese-koi-10811135394086_2393561d-e52e-47d9-bf8f-68bedf7e549c.png?v=1792475462"},{"product_id":"nnd-sanke-female-nisai-koi","title":"NND Sanke Female Nisai Koi","description":"\u003cp\u003eAn NND Sanke female Nisai listed at approximately 50–55 cm. Taisho Sanke is defined by red and black markings over a white base. In a well-balanced fish, the black (sumi) provides contrast without overwhelming the white ground and red pattern. This is a sizeable specimen whose actual conformation and pattern should be inspected before purchase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSupplier code:\u003c\/strong\u003e KJ-0150  |  \u003cstrong\u003eListed size:\u003c\/strong\u003e 50–55 cm\u003c\/p\u003e\u003ch3\u003eWhat to look for in this Koi\u003c\/h3\u003e\u003cp\u003eA 50–55 cm Koi produces far more waste than a small Tosai. Give it a mature, high-volume pond, generous water movement and aeration, and a filter maintained for large fish. Introduce it only after a proper observation period. Watch appetite, skin, fins and swimming behaviour closely in the first few weeks; do not treat healthy fish prophylactically without a reason.\u003c\/p\u003e\u003ch3\u003ePond requirements and day-to-day care\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSpecies:\u003c\/strong\u003e Japanese ornamental Koi (\u003cem\u003eCyprinus carpio\u003c\/em\u003e). These are social, long-lived pond fish that can exceed 60 cm, with some growing considerably larger. Keep with suitably sized Koi rather than in small indoor aquariums. Provide substantial swimming volume, strong biological and mechanical filtration, aeration, shade and protection from predators. Actual pond volume depends on adult stocking density and filtration; allow several thousand litres for a small group and plan for growth.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWater:\u003c\/strong\u003e Aim for stable, well-oxygenated water around 15–25°C, pH roughly 7.0–8.5, and zero measurable ammonia and nitrite. Koi tolerate seasonal temperature variation if changes are gradual, but heat, low oxygen and abrupt shifts are dangerous. Test water routinely and perform sensible partial water changes using dechlorinated water.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeeding:\u003c\/strong\u003e Offer a reputable Koi pellet suited to fish size and water temperature. Feed only what is eaten promptly; reduce feeding as the water cools and follow temperature-specific food guidance. Uneaten food and aggressive growth feeding increase water pollution.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIntroducing your fish:\u003c\/strong\u003e Arrange suitable live-fish transport before ordering. Have a separate observation\/quarantine system ready, compare transport and pond conditions, and acclimate carefully without adding transport water to the pond. Monitor the fish before mixing it with established stock.\u003c\/p\u003e\u003ch3\u003eChoosing and receiving your Koi\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIllustrative image:\u003c\/strong\u003e The image is AI-generated to explain the advertised type; it is not a photograph of the fish offered. Pattern, colouring, body shape, sex and exact measured length may vary. Request current photos\/video and supplier confirmation for individually priced specimens before purchase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAvailability:\u003c\/strong\u003e Supplier availability is subject to individual selection, confirmation and transport suitability. Large Koi may require specialist collection or quoted transport rather than standard livestock courier pricing.\u003c\/p\u003e","brand":"Glass \u0026 Gill","offers":[{"title":"Default Title","offer_id":54155317215526,"sku":"KJ-0150","price":13995.0,"currency_code":"ZAR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1019\/9810\/0774\/files\/gg-japanese-koi-10811135492390_c0825d2a-06a9-472e-87ea-3cd0d7435443.png?v=1792475482"}],"url":"https:\/\/www.glassandgill.co.za\/collections\/cold-water-fish.oembed","provider":"Glass And Gill","version":"1.0","type":"link"}