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 ...

If you want a range of different species of fish in your aquarium here are 18 to get started with. From garden ponds filled with Koi Carp to the humble goldfish bowl (although goldfish are far happier ...