Kent’s Home for Beautiful Cold Water Fish

Beautiful cold water fish for colourful, easy-to-maintain aquariums

At Birchwood Aquatic Centre, we stock a wide range of healthy cold water fish perfect for home aquariums. From classic goldfish varieties to active species like Zebra Danios, our cold water section is ideal for both beginners and experienced fishkeepers. Whether you’re setting up your first aquarium or expanding an established tank, our team can help you choose the right fish, equipment, and foods to keep them thriving. Visit Birchwood Aquatic Centre for quality Cold Water Fish and aquarium supplies.

Zebra danios swimming in a planted freshwater aquarium with rocks and gravel

Cold water fish are a fantastic option for aquariums that do not require a heater. These hardy species are ideal for beginners, families, and anyone looking for colourful, active fish that are easy to care for. At Birchwood Aquatic Centre, we regularly stock a variety of beautiful cold water fish suitable for home aquariums of different sizes.

Whether you are setting up your first aquarium or adding to an established tank, our experienced team can help you choose the right fish and ensure they thrive in your setup.

Cold water fish are commonly kept in indoor aquariums and are different from pond fish such as koi and large goldfish varieties. They are generally smaller species that live comfortably in cooler aquarium temperatures, making them a popular choice for home fishkeeping.

What Are Cold Water Fish?

Cold water fish are species that thrive in aquariums without the need for a heater. Most do well in temperatures between 16°C and 22°C, although some species can tolerate slightly warmer conditions.

These fish are often recommended for beginners because they tend to be hardy, adaptable, and easier to maintain than some tropical species.

Cold water aquariums can still be beautiful and vibrant, with many colourful species that display interesting behaviour and active swimming patterns.

Popular Cold Water Fish Species

At Birchwood Aquatic Centre we regularly stock a range of cold water fish, including:

Goldfish varieties

  • Fantail Goldfish
  • Oranda Goldfish
  • Black Moor Goldfish
  • Ryukin Goldfish

Small cold water species

  • White Cloud Mountain Minnows
  • Zebra Danios
  • Rosy Barbs
  • Variatus Platies

Some of these species can also tolerate tropical conditions, but they are commonly kept in cooler aquariums and make excellent community fish.

Our livestock selection changes frequently, so it’s always worth visiting the shop to see what new arrivals we have in stock.

Setting Up a Cold Water Aquarium

Although cold water fish do not require a heater, they still need a properly set up aquarium to remain healthy.

A good cold water aquarium should include:

Adequate filtration
Cold water fish still produce waste, so a quality filter is essential to maintain good water quality.

Plenty of swimming space
Goldfish and other species grow larger than many people expect, so choosing the correct tank size is important.

Decor and plants
Aquarium plants and decorations provide hiding spaces and help create a natural environment.

Regular maintenance
Weekly water changes and water testing help keep your fish healthy and the aquarium stable.

Our team is always happy to help you choose the right equipment when setting up your tank.

Cold Water Fish Care Tips

Cold water fish are relatively easy to care for, but following a few simple guidelines will help ensure long-term success.

Do not overcrowd the aquarium
Fish need enough swimming space and filtration to remain healthy.

Feed high-quality fish food
A balanced diet helps maintain colour, growth, and immune health.

Monitor water quality
Testing your water regularly helps prevent common problems caused by ammonia, nitrite, or nitrate build-up.

Acclimate new fish slowly
Allow new fish time to adjust to the aquarium temperature and water conditions before release.

If you are unsure about compatibility or tank size, our team in store can offer expert advice.

Visit Birchwood Aquatic Centre

If you’re looking for cold water fish in Kent, Birchwood Aquatic Centre offers a wide range of livestock, aquariums, and equipment to help you build the perfect setup.

Our knowledgeable team can guide you through choosing the right species, setting up your aquarium, and maintaining healthy fish.

We regularly receive new livestock, so there is always something exciting to see in store.