Building and maintaining aquariums is a very cool hobby, but it's not a cheap one. Even if you just have a modest-sized fishbowl for one fish, that's still a lot of cleaning, feeding, pet care, and ...

Buying an aquarium can be an expensive business - but the inhabitants don’t have to be pricey. From garden ponds filled with Koi Carp to the humble goldfish bowl (although goldfish really need far ...