Cold Water Fish at Smith’s Aquatics
Cold water fish are a popular choice for aquariums because they are generally hardy, active, and can often be kept without an aquarium heater. At Smith’s Aquatics in Stockton-on-Tees we stock a variety of cold water fish suitable for both beginner and experienced fishkeepers.
From classic goldfish varieties to smaller community species, cold water aquariums can be colourful, lively, and easy to maintain when set up correctly. Whether you’re setting up your first tank or adding new species to an existing aquarium, our team is always happy to help you choose fish that will thrive in your setup.
What Are Cold Water Fish?
Cold water fish are freshwater fish that can comfortably live at normal room temperatures without the need for an aquarium heater. These species naturally come from environments where water temperatures are cooler or change throughout the year. As a result, they are generally more tolerant of lower temperatures than tropical fish.
Many cold water aquarium fish thrive in water temperatures around 18°C to 24°C, though exact requirements vary depending on the species.
Because they do not always require heating equipment, cold water aquariums can be a great option for beginners or for people looking for a simpler setup.

Explore Our Cold Water Fish
Below you’ll find a selection of cold water fish that we regularly stock at Smith’s Aquatics. Select a species to learn more about them. Each species page provides useful information to help you make informed choices when adding cold water fish to your aquarium.
Availability changes regularly — please contact the store for current stock or enquiries about specific species.
Fancy Gold Fish
Fancy Goldfish Overview Scientific Name:…
