These pet aquarium fish are all real cool... From garden ponds filled with Koi Carp to the humble goldfish bowl (although, goldfish really need far more space to thrive) – the UK 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 ...