--- type: category category: "Koi & Pond" stores: 151 states: 26 url: https://www.fishstores.org/best/koi-pond --- # Best Koi & Pond Fish Stores by State 151 stores specializing in koi fish, pond supplies, and outdoor water features across 26 states Koi keeping is a different world from indoor aquariums. The fish are measured in inches and feet, not centimeters. The filters are the size of garbage cans. The water volume is counted in thousands of gallons, and the seasonal rhythm (spring cleanouts, summer feeding, fall netting, winter dormancy) shapes the entire year. A good koi and pond store understands all of this, and carries the specialized equipment, food, and livestock that general pet shops simply cannot. ## States | State | Stores | | --- | --- | | [California](https://www.fishstores.org/best/koi-pond/california) | 23 | | [New Jersey](https://www.fishstores.org/best/koi-pond/new-jersey) | 14 | | [Pennsylvania](https://www.fishstores.org/best/koi-pond/pennsylvania) | 11 | | [Texas](https://www.fishstores.org/best/koi-pond/texas) | 8 | | [Indiana](https://www.fishstores.org/best/koi-pond/indiana) | 7 | | [New York](https://www.fishstores.org/best/koi-pond/new-york) | 7 | | [Oregon](https://www.fishstores.org/best/koi-pond/oregon) | 7 | | [Virginia](https://www.fishstores.org/best/koi-pond/virginia) | 7 | | [Georgia](https://www.fishstores.org/best/koi-pond/georgia) | 5 | | [Michigan](https://www.fishstores.org/best/koi-pond/michigan) | 5 | | [Minnesota](https://www.fishstores.org/best/koi-pond/minnesota) | 5 | | [Colorado](https://www.fishstores.org/best/koi-pond/colorado) | 4 | | [Connecticut](https://www.fishstores.org/best/koi-pond/connecticut) | 4 | | [Iowa](https://www.fishstores.org/best/koi-pond/iowa) | 4 | | [Illinois](https://www.fishstores.org/best/koi-pond/illinois) | 4 | | [Oklahoma](https://www.fishstores.org/best/koi-pond/oklahoma) | 4 | | [Tennessee](https://www.fishstores.org/best/koi-pond/tennessee) | 4 | | [Washington](https://www.fishstores.org/best/koi-pond/washington) | 4 | | [Florida](https://www.fishstores.org/best/koi-pond/florida) | 3 | | [Kentucky](https://www.fishstores.org/best/koi-pond/kentucky) | 3 | | [Massachusetts](https://www.fishstores.org/best/koi-pond/massachusetts) | 3 | | [Missouri](https://www.fishstores.org/best/koi-pond/missouri) | 3 | | [North Carolina](https://www.fishstores.org/best/koi-pond/north-carolina) | 3 | | [New Mexico](https://www.fishstores.org/best/koi-pond/new-mexico) | 3 | | [Nevada](https://www.fishstores.org/best/koi-pond/nevada) | 3 | | [Ohio](https://www.fishstores.org/best/koi-pond/ohio) | 3 | ## Spring parasites, winter dormancy, and what your climate changes Koi ponds follow the calendar. In spring, water temperatures rise through the danger zone of 50 to 65 degrees Fahrenheit, where koi immune systems are sluggish but bacteria are active. This is when Aeromonas infections and ulcer disease hit hardest. A knowledgeable pond store stocks medicated foods, Tricide-Neo dip treatments, and potassium permanganate, and they know when each is appropriate. In summer, feeding ramps up and you are managing oxygen levels, especially during heat waves. Fall means leaf netting, reducing feed as temperatures drop, and switching to wheat germ diets that are easier to digest in cold water. Winter care varies dramatically by region: in zone 5, you need a de-icer and an aeration hole in the ice. In zone 9, your koi never fully go dormant. A local pond store understands your climate, your water source (municipal versus well), and the specific parasites and pathogens common in your area. That regional knowledge is impossible to get from an online retailer shipping koi in styrofoam boxes. ## Bead filters, bottom drains, and the pond gear garden centers skip Indoor aquarium filtration is about biological media in a canister. Pond filtration is an engineering project. A proper koi pond store stocks bead filters, drum filters, and multi-chamber gravity-fed systems, not the waterfall box from the hardware store. They carry bottom drains, aerated settlement chambers, and UV sterilizers rated for real pond volumes. Ask them about turnover rate; a good shop will tell you your entire pond volume should cycle through filtration once every one to two hours. They also carry proper pond pumps, not sump pumps, designed to run 24/7 for years without burning out. Expect brands like Evolution Aqua, Nexus, and Oase on the shelves. For water testing, serious koi keepers go beyond the API master kit: they monitor KH and GH closely, because pH crashes from low carbonate hardness kill koi in spring when biological filtration ramps back up after winter. A good pond store will walk you through all of this without trying to upsell you on a waterfall. ## What separates a real koi dealer from a garden center A garden center sells koi the way it sells mulch: in bulk, cheap, with no paperwork. A dedicated koi dealer quarantines incoming stock for two to four weeks, tests for koi herpesvirus (KHV), and can tell you whether a fish is a Kohaku, a Sanke, or a Showa. They know the breeder. They can point to the parent fish in a catalog. This matters because KHV is lethal and incurable. One infected fish from an unknown source can wipe out a pond worth thousands of dollars in a weekend. Reputable dealers also grade their fish honestly. A $30 pond-grade tosai is a perfectly fine fish for a backyard pond, but it is not a show-quality tategoi, and a trustworthy store will tell you the difference. They stock Saki-Hikari and JPD foods, not generic pellets, because koi color development depends heavily on diet. They carry clay additives, wheat germ formulas for spring and fall, and spirulina-based color-boosting foods you will never find on a garden center shelf. ## FAQ **Q: How deep does a koi pond need to be?** A: In colder climates (USDA zones 3-6), a koi pond should be at least 4 feet deep to provide a thermal refuge below the ice line during winter. In warmer climates, 3 feet is workable but deeper is always better. Deeper water stays cooler in summer heat and gives koi room to escape shallow-water predators like herons. Avoid the common mistake of building wide and shallow. A 1,500-gallon pond that is 5 feet deep is far better for koi health than a 1,500-gallon pond that is only 2 feet deep and spread across a large footprint. **Q: Is expensive koi food actually worth it?** A: Yes, but not for the reasons most people think. Premium foods like Saki-Hikari and JPD go beyond color development. They produce significantly less waste per gram of protein, which means cleaner water and less load on your filtration. A koi on cheap food produces more ammonia per feeding than the same koi on a high-quality diet. The color benefits are real too: spirulina and astaxanthin in premium foods develop reds and oranges that generic pellets simply cannot. You will spend more per bag, but your water quality improves and your fish look noticeably better within a few months. **Q: Can I mix koi with goldfish in a pond?** A: You can, and many people do, but there are trade-offs. Goldfish breed prolifically and will eventually overwhelm a pond with fry if you do not manage population. They also compete with koi for food. The bigger concern is disease: goldfish can carry KHV asymptomatically and transmit it to koi. If you buy goldfish from one source and koi from another, you are mixing disease risks. Most serious koi keepers run koi-only ponds for this reason. If you want both, buy them from the same reputable dealer and quarantine everything together before adding to your main pond. --- *Source: [FishStores.org](https://www.fishstores.org/best/koi-pond)*