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Pond and Koi Fish

Create a thriving garden pond with healthy fish and expert support

Looking to build or maintain a garden pond? Whether you’re a seasoned pond keeper or just getting started, Birchwood Aquatic Centre is your go-to for pond fish, equipment, and seasonal advice. From peaceful water gardens to koi showcases, we’ve got the livestock and tools to keep your pond vibrant all year round.

Group of colourful koi carp swimming among green lily pads in a clear outdoor pond

Healthy, Hardy Pond and Koi Fish

At Birchwood Aquatic Centre, we specialise in healthy, hardy pond and koi fish suitable for UK gardens and outdoor pond systems. We stock a wide range of cold-water pond fish, all hand-selected from trusted UK breeders and suppliers known for quality, biosecurity and responsible fish husbandry.

All of our pond and koi fish are housed in well-aerated outdoor systems, allowing them to naturally acclimatise to seasonal temperatures before sale. This greatly reduces stress and helps ensure a smooth transition from our systems to your garden pond. Fish are carefully monitored, fed appropriately, and maintained in clean, stable water conditions to promote strong immune systems and long-term health.

We carry a varied selection of popular pond species including koi carp, goldfish, shubunkins, orfe and sterlet, suitable for ponds of different sizes and experience levels. Whether you’re stocking a wildlife pond, a decorative garden feature, or a dedicated koi pond, our team can help you choose fish that are compatible with your setup and filtration capacity.

All pond and koi fish are regularly health-checked and quarantined before being released for sale, giving you confidence that you’re introducing robust, disease-free fish to your pond. We’re always happy to advise on pond stocking levels, seasonal care, feeding routines, water quality and ongoing maintenance to help your pond thrive year-round.

Our Pond Range

Depending on the season, you’ll find:

Coldwater & Pond Fish:

  • Koi Carp (various sizes and varieties)

  • Goldfish (Standard, Comet, and Sarasa)

  • Shubunkins

  • Golden Orfe

  • Tench

  • Ghost Koi & Grass Carp (when available)

Pond Accessories:

  • Pond filters & UV clarifiers

  • Pumps, liners & air stones

  • Floating and marginal pond plants

  • Pond fish food (seasonal, floating, sinking)

  • Treatments for green water, blanketweed, parasites, and more

Pond Care Advice You Can Trust

Outdoor ponds require different care throughout the year from summer feeding to winter shutdown. We offer tailored seasonal advice, whether you’re setting up a brand new pond, restocking, or troubleshooting water clarity or fish health.

We can help with:

  • Choosing the right fish for pond size and depth

  • Balancing plants, fish, and filtration

  • Managing water quality and algae

  • Introducing new fish safely

  • Seasonal pond care (spring start-up, winter protection)

  • Pest and parasite prevention

Why Shop Pond With Us?

✔ Acclimatised, healthy pond fish
✔ Full range of pond treatments and foods
✔ Pumps, filters, and UV systems in stock
✔ Seasonal advice from pond-keeping experts
✔ Friendly, honest guidance for new and experienced pond owners

📍 Visit Birchwood Aquatic Centre in Swanley, Kent, and let us help you create a beautiful, balanced pond you’ll enjoy year after year.