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These fish are all really cool customers. From garden ponds filled with Koi Carp to the humble goldfish bowl (although, goldfish need far more space than a bowl can offer) –Britain is a nation of fish ...

To keep your fish healthy and happy throughout their life, you need to understand how and why to change your fish tank water. There are thousands of fish breeds, and each one requires different care ...

A Pacific bluefin tuna swims in a tank at Tokyo Sea Life Park, in Japan. A research team looked at eicosapentaenoic acid and docosahexaenoic acid (EPA+DHA), which are fatty acids found in cold-water ...

When water temperatures get too hot, fish can become stressed or even die. In rivers, Atlantic salmon and other cold-water species sometimes escape the heat by flocking to cooler areas, which often ...